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Historic Bridges: Fixed Trunnion

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.


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Total Bridges Found: 88

100th Street Bridge
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100th Street Over Calumet River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 326 ft. Main Span: 233 ft. Roadway: 38 ft. Main Spans: 1
Built 1927 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This bascule bridge is an excellent and unaltered example of a traditional Chicago bascule bridge.
106th Street Bridge
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106th Street Over Calumet River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 349 ft. Main Span: 250 ft. Roadway: 38 ft. Main Spans: 1
Built 1930 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This impressive bascule bridge has very tall trusses and is among the most impressive of the Calumet River highway bridges.
18th Street Bridge
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18th Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 280 ft. Main Span: 182 ft. Roadway: 48 ft. Main Spans: 1
Built 1967 By: Overland Construction Company of Chicago, Illinois and City of Chicago
This is one of the few single leaf highway bascule bridges in Chicago, and the only example using the pony/deck truss design.
3rd Street Islais Creek Bridge
Levon Hagop Nishkian Bridge
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3rd Street Over Islais Creek in San Francisco: San Francisco County, California, United States
Metal Through Girder, Movable: Double Leaf Bascule (Fixed Trunnion)
Length: 120 ft. Main Span: 105 ft. Roadway: 68.2 ft. Main Spans: 1
Built 1945 By: Unknown and Leon Hagop Nishkian of San Francisco, California
This wide bascule with three girder lines has racks that extend above the deck.
7th Street Bridge
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7th Street (Erie Street) Over Black River in Port Huron: St. Clair County, Michigan, United States
Metal Variable Depth Deck Girder, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Concrete Rigid-Frame, Fixed
Length: 273 ft. Main Span: 114 ft. Roadway: 40 ft. Main Spans: 1
Built 1933 By: Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin and J. A. L. Waddell
Take a tour of the inside of the only single leaf highway bascule bridge in Michigan, which was built in the 1930s.
95th Street Bridge
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95th Street Bridge (US-12) Over Calumet River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 343 ft. Main Span: 239 ft. Roadway: 62 ft. Main Spans: 1
Built 1958 By: Overland Construction Company of Chicago, Illinois and City of Chicago
This is the bascule bridge the seen in the Blues Brothers movie.
Adams Street Bridge
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Adams Street (Historic US-66) Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 250 ft. Main Span: 199 ft. Roadway: 38 ft. Main Spans: 1
Built 1927 By: Strobel Steel Construction Company of Chicago, Illinois and City of Chicago
One of the bascule bridges in Chicago that is a true deck truss with no trusses above the roadway.
Albee Road Bridge
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Albee Road Over Intracoastal Waterway in Nokomis: Sarasota County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 309 ft. Main Span: 134 ft. Roadway: 26.2 ft. Main Spans: 1
Built 1963 By: Unknown
This standard 1960s Florida bascule bridge continues to operate frequently for boats.
Alva Bridge
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Broadway Street Over Caloosahatchee River (Okeechobee Waterway) in Alva: Lee County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 547 ft. Main Span: 104 ft. Roadway: 28 ft. Main Spans: 1
Built 1969 By: Unknown
This is a traditional 1960s Florida bascule bridge.
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Ashland Avenue North Branch Bridge
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Ashland Avenue Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 387 ft. Main Span: 232 ft. Roadway: 60 ft. Main Spans: 1
Built 1936 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This graceful structure includes bridge tender buildings with symbolic depictions.
Ashland Avenue Sanitary and Ship Canal Bridge
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Ashland Avenue Over Chicago Sanitary and Ship Canal in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 312 ft. Main Span: 225 ft. Roadway: 57 ft. Main Spans: 1
Built 1938 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This is among the widest Chicago bascule bridges, and is associated with Depression era funding programs.
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Big Carlos Pass Bridge
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CR-865 (Bonita Beach Causeway, Estero Boulevard) Over Big Carlos Pass in Fort Myers Beach and Bonita Springs: Lee County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 1,685 ft. Main Span: 79 ft. Roadway: 26.2 ft. Main Spans: 1
Built 1965 By: Unknown
This is a rare example of a single leaf highway bascule bridge in Florida.
Canal Street Bridge
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Canal Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 350 ft. Main Span: 254 ft. Roadway: 44 ft. Main Spans: 1
Built 1949 By: Mount Vernon Bridge Company of Mount Vernon, Ohio and City of Chicago
This trunnion bascule bridge was built by the Mount Vernon Bridge Company of Ohio.
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Causton Bluff Bridges
Islands Expressway Bridges
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Islands Expressway Over Wilmington River in Savannah: Chatham County, Georgia, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 804 ft. Main Span: 150 ft. Roadway: 28 ft. Main Spans: 1
Built 1963 By: Unknown
This pair of bascule bridges are similar in appearance, but not identical, and one has older girders which were moved and reused here.
X
Chicago Avenue Bridge
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Chicago Avenue Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 291 ft. Main Span: 189 ft. Roadway: 36 ft. Main Spans: 1
Built 1914 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This is one of the oldest pony truss style bascule bridges in Chicago.
Clark Street Bridge
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Clark Street Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 346 ft. Main Span: 245 ft. Roadway: 38.1 ft. Main Spans: 1
Built 1929 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This is one of the largest and most impressive of the pony truss bascule bridges in downtown Chicago.
Columbus Drive Bridge
William P. Fahey Bridge
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Columbus Drive Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Non-Historic, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 389 ft. Main Span: 269 ft. Roadway: 90 ft. Main Spans: 1
Built 1982 By: Paschen Contractors of Chicago, Illinois and American Bridge Company of New York, New York and City of Chicago and Envirodyne Engineers Inc.
This non-historic bridge is listed only for comparitive purposes and for continuity of those using this website for a river tour.
Congress Parkway Bridge
Wagner Memorial Bridge, Ida B. Wells Drive Bridge
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Congress Parkway (Ida B. Wells Drive) Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Warren Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion)
Length: 335 ft. Main Span: 222 ft. Roadway: 83.7 ft. Main Spans: 1
Built 1956 By: Overland Construction Company of Chicago, Illinois
One of the most unusually designed of the Chicago bridges, because it uses the Warren truss configuration rather than the Pratt.
Corey Causeway
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FL-693 (Pasadena Avenue and 75th Avenue) Over Intracoastal Waterway in St. Petersburg: Pinellas County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam),
Length: 950 ft. Main Span: 111 ft. Roadway: 28.2 ft. Main Spans: 1
Built 1961 By: Unknown
This bridge was built as a pair of bascule bridges sitting beside each other.
Cortland Street Bridge
West Clybourn Place Bridge
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Cortland Street Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal 14 Panel Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 217 ft. Main Span: 128 ft. Roadway: 36 ft. Main Spans: 1
Built 1901 By: American Bridge Company of New York, New York and City of Chicago
Easily the most significant Chicago bridge, this ornate bridge was the first trunnion bascule bridge ever built!
D Street Bridge
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D Street Over Petaluma River in Petaluma: Sonoma County, California, United States
Metal Rivet-Connected Warren Pony Truss, Movable: Single Leaf Bascule (Fixed Trunnion)
Length: 205 ft. Main Span: 80 ft. Roadway: 32.2 ft. Main Spans: 1
Built 1933 By: Unknown and Leon Hagop Nishkian of San Francisco, California
This bascule bridge positions its operating rack on the exterior of the truss for all to see!
Dearborn Street Bridge
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Dearborn Street Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 341 ft. Main Span: 235 ft. Roadway: 56 ft. Main Spans: 1
Built 1963 By: Overland Construction Company of Chicago, Illinois and City of Chicago
Built in 1963, this bridge is among the newest Chicago bridges, but appears to have been built to match other older bridges in Chicago.
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Division Street North Branch Bridge
Charles Levy Bridge
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Division Street Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 242 ft. Main Span: 149 ft. Roadway: 36 ft. Main Spans: 1
Built 1903 By: Roemheld and Gallery and City of Chicago
Division Avenue has two rare first generation Chicago bascule bridges within sight of each other, and this is the westernmost one.
X
Division Street North Branch Canal Bridge
Division Street Eastern Bridge
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Division Street Over North Branch Chicago River Canal in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 260 ft. Main Span: 173 ft. Roadway: 39 ft. Main Spans: 1
Built 1904 By: Roemheld and Gallery and City of Chicago
This bridge is noted for its unusual decorative plate bracing that is unlike other similarly designed bridges.
Dix Avenue Bridge
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Dix Avenue Over River Rouge in Detroit: Wayne County, Michigan, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 222 ft. Main Span: 164 ft. Roadway: 56 ft. Main Spans: 1
Built 1927 By: Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin and Hugh E. Young of Chicago, Illinois
A little taste of Chicago is in Detroit, through the bascule bridges of River Rouge.
Dundas Bridge
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Margaret Avenue and James Street (RR-78) Over North Branch Sydenham River in Wallaceburg: Chatham-Kent Region, Ontario, Canada
Metal Through Girder, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Through Girder, Fixed
Length: 204 ft. Main Span: 100 ft. Roadway: 50.8 ft. Main Spans: 1
Built 1961 By: Dominion Bridge Company of Montréal, Québec and Laughlin, Wyllie, and Ufnal of Toronto, Ontario
This bascule bridge looks newer than it is because its girders are of welded construction rather than riveted.
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Dunedin Causeway Bridge
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Causeway Boulevard Over Intracoastal Waterway (St. Joseph Sound) in Dunedin: Pinellas County, Florida, United States
Metal Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 1,190 ft. Main Span: 133 ft. Roadway: 26 ft. Main Spans: 1
Built 1963 By: Unknown
This is a standard 1960s bascule bridge that is at risk for demolition and replacement.
Erie Avenue Bridge
Charles Berry Bascule Bridge
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Erie Avenue (US-6) Over Black River in Lorain: Lorain County, Ohio, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Continuous Deck Girder, Fixed
Length: 1,053 ft. Main Span: 330 ft. Roadway: 47 ft. Main Spans: 1
Built 1940 By: Mount Vernon Bridge Company of Mount Vernon, Ohio and Wilbur J. Watson and Associates of Cleveland, Ohio
This graceful bascule bridge was noted for its very large span length when completed.
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Ewing Avenue Bridge
92nd Street Bridge
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Ewing Avenue (US-41) Over Calumet River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 338 ft. Main Span: 228 ft. Roadway: 36 ft. Main Spans: 1
Built 1914 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This is one of the oldest highway bridges on the Calumet River.
X
FL-105 Sisters Creek Bridge
Heckscher Drive Bridge
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FL-105 (Heckscher Drive) Over Sisters Creek in Jacksonville: Duval County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 756 ft. Main Span: 134 ft. Roadway: 28 ft. Main Spans: 1
Built 1952 By: Unknown
This traditional example of a plate girder bascule bridge has been replaced by a mundane fixed high level bridge.
X
Fort Street Bridge
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Fort Street (M-85) Over River Rouge in Detroit: Wayne County, Michigan, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 282 ft. Main Span: 164 ft. Roadway: 55.8 ft. Main Spans: 1
Built 1922 By: Bethlehem Steel Bridge Corporation of Steelton, Pennsylvania and Chicago Bascule Bridge Company of Chicago, Illinois
Despite its historic significance, this deck truss bascule bridge was demolished.
Franklin Street Bridge
LaPorte County Bridge 505
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Franklin Street Over Trail Creek in Michigan City: La Porte County, Indiana, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion)
Length: 213 ft. Main Span: 182 ft. Roadway: 35.8 ft. Main Spans: 1
Built 1932 By: Roberts Supply Company of Lima, Ohio and Scherzer Rolling Lift Bridge Company of Chicago, Illinois
This significant Sherzer rolling lift is the only remaining historic highway bascule bridge in the entire state of Indiana.
Franklin Street Bridge
Franklin-Orleans Bridge
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Franklin Street (Orleans Street) Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 320 ft. Main Span: 252 ft. Roadway: 38 ft. Main Spans: 1
Built 1920 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
Featuring ornate railings, this bridge is among the older examples of this style of bascule bridge.
Grand Avenue Bridge
Indiana Street Bridge
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Grand Avenue Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 270 ft. Main Span: 188 ft. Roadway: 36 ft. Main Spans: 1
Built 1913 By: Strobel Steel Construction Company of Chicago, Illinois and City of Chicago
One of the older Chicago bridges, this is an older version of the pony truss bascule bridge design seen in Chicago.
X
Groveland Bridge
Bates Bridge
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MA-113 and MA-97 Over Merrimack River in Groveland: Essex County, Massachusetts, United States
Metal Through Girder, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal 8 Panel Rivet-Connected Pratt Through Truss, Fixed
Length: 790 ft. Main Span: 117 ft. Roadway: 27 ft. Main Spans: 1
Built 1914 By: Boston Bridge Works of Boston, Massachusetts and George F. Swain
This unusual bridge has large through truss approach spans that overwhelm and all but hide the plate girder main span.
Halsted Street North Branch Bridge
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Halsted Street Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 267 ft. Main Span: 154 ft. Roadway: 46 ft. Main Spans: 1
Built 1955 By: Overland Construction Company of Chicago, Illinois and City of Chicago
One of the younger examples of a deck truss bascule bridge in Chicago.
X
Halsted Street North Branch Canal Bridge
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Halsted Street Over North Branch Chicago River Canal in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 302 ft. Main Span: 206 ft. Roadway: 36 ft. Main Spans: 1
Built 1909 By: Jules E. Roemheld Company and City of Chicago
Among the most important historic bridges in Chicago is this large example of the earliest bascule bridge design seen in Chicago.
Halsted Street South Branch Bridge
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Halsted Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 316 ft. Main Span: 224 ft. Roadway: 90 ft. Main Spans: 1
Built 1934 By: Mount Vernon Bridge Company of Mount Vernon, Ohio and City of Chicago
This bridge is three trusses wide and still lifts for boats in the spring and fall seasons.
Harlem Avenue Bridges
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Harlem Avenue (IL-43) Over Chicago Sanitary and Ship Canal in Lyons: Cook County, Illinois, United States
Metal Rivet-Connected Warren Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 456 ft. Main Span: 224 ft. Roadway: 56 ft. Main Spans: 1
Built 1931 By: Unknown
One of these near-twin bridges is the oldest example of its unusual kind among the Chicago bascule collection.
Harrison Street Bridge
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Harrison Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 279 ft. Main Span: 210 ft. Roadway: 44 ft. Main Spans: 1
Built 1960 By: Overland Construction Company of Chicago, Illinois and City of Chicago
This is one of the later examples of the pony/deck truss combination bridges.
High Street Bridge
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High Street Over Oakland Estuary in Alameda and Oakland: Alameda County, California, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Concrete T-Beam, Fixed
Length: 505 ft. Main Span: 295 ft. Roadway: 24 ft. Main Spans: 1
Built 1939 By: Mac Donald and Kahn of Los Angeles, California and County of Alameda Surveyors Office
Associated with Depression era relief programs, this is the more narrow of two nice looking historic bascule bridges in Alameda.
Indian Rocks Beach Bridge
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FL-688 (Walsingham Road) Over Intracoastal Waterway in Indian Rocks Beach: Pinellas County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 458 ft. Main Span: 134 ft. Roadway: 28 ft. Main Spans: 1
Built 1958 By: Unknown
This standard 1950s Florida bascule bridge was paired with another bascule span in 1999 to form a one-way couplet.
Isthmus Slough Bridge
Newport Lane Bridge
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Coos River Highway (Newport Lane) Over Isthmus Slough in Coos Bay: Coos County, Oregon, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal 10 Panel Rivet-Connected Pratt Deck Truss, Fixed
Length: 1,758 ft. Main Span: 165 ft. Roadway: 27 ft. Main Spans: 1
Built 1931 By: Liesch and Tofte of Coos Bay, Oregon and Conde Balcom McCullough (Oregon State Highway Commission)
This bridge is a double-leaf bascule bridge that also includes a fixed deck truss approach span next to the bascule span.
Jefferson Avenue Bridge
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Jefferson Avenue Over River Rouge in Detroit: Wayne County, Michigan, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 248 ft. Main Span: 91 ft. Roadway: 46 ft. Main Spans: 1
Built 1922 By: Strobel Steel Construction Company of Chicago, Illinois and Hugh E. Young of Chicago, Illinois
The only pony truss style bascule bridge in the entire state of Michigan.
Kinzie Street Bridge
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Kinzie Street Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 195 ft. Main Span: 136 ft. Roadway: 36 ft. Main Spans: 1
Built 1909 By: John J. Gallery and City of Chicago
This unusual bascule bridge had three quarters of its superstructure replaced with new members.
La Salle Street Bridge
Marshall Suloway Bridge
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La Salle Street Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 347 ft. Main Span: 242 ft. Roadway: 56 ft. Main Spans: 1
Built 1928 By: Strobel Steel Construction Company of Chicago, Illinois and City of Chicago
Similar to the Clark Street Bridge, this exceptionally elaborate and beautiful bridge serves a significant downtown Chicago street.
LaBelle Bridge
LaBelle Draw
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FL-29 (Bridge Street) Over Caloosahatchee River (Okeechobee Waterway) in LaBelle: Hendry County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 502 ft. Main Span: 105 ft. Roadway: 28 ft. Main Spans: 1
Built 1959 By: Unknown
This deck plate girder bascule bridge is noted for its riveted construction.
Lake Shore Drive Bridge
Outer Drive Bridge
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Lake Shore Drive (US-41) Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 356 ft. Main Span: 264 ft. Roadway: 80.7 ft. Main Spans: 1
Built 1937 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This enormous record-breaking bascule bridge carries traffic on a double-deck!
Lake Street Bridge
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Lake Street and Railroad (Chicago Transit Authority "L" Green and Pink Lines) Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Warren Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 333 ft. Main Span: 245 ft. Roadway: 38 ft. Main Spans: 1
Built 1916 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
A virtual tour of the bridge house and machinery room is available for this double-deck bascule bridge that carries CTA L trains on an upper deck.
Lewis and Clark River Bridge
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Business US-101 (Warrenton-Astoria Highway) Over Lewis and Clark River in Astoria: Clatsop County, Oregon, United States
Metal 7 Panel Rivet-Connected Pratt Deck Truss, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Length: 870 ft. Main Span: 112 ft. Roadway: 19 ft. Main Spans: 1
Built 1924 By: Unknown and Conde Balcom McCullough (Oregon State Highway Commission)
This is a rare example of a single leaf highway bascule bridge, and it includes a long timber approach causeway.
Loomis Street Bridge
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Loomis Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Non-Historic, Movable: Double Leaf Bascule (Fixed Trunnion)
Length: 457 ft. Main Span: 213 ft. Roadway: 48 ft. Main Spans: 1
Built 1974 By: Paschen Contractors of Chicago, Illinois and American Bridge Company of New York, New York and City of Chicago
This non-historic bridge is listed only for comparitive purposes and for continuity of those using this website for a river tour.
Lord Selkirk Bridge
McNaughton Avenue Bridge
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McNaughton Avenue (KH-40) Over Sydenham River in Wallaceburg: Chatham-Kent Region, Ontario, Canada
Metal Through Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 360 ft. Main Span: 152 ft. Roadway: 27.9 ft. Main Spans: 1
Built 1950 By: Dominion Bridge Company of Montréal, Québec
This is Wallaceburg's most historic and notable highway bridge.
Madison Street Bridge
Lyric Opera Bridge
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Madison Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 283 ft. Main Span: 221 ft. Roadway: 38 ft. Main Spans: 1
Built 1922 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
The first bascule bridge in Chicago to raise the deck trusses above the deck slightly to act as guardrails.
Manasota Key Bridge
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Manasota Beach Road (CR-774) Over Intracoastal Waterway in Manasota: Sarasota County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 614 ft. Main Span: 134 ft. Roadway: 26 ft. Main Spans: 1
Built 1964 By: Unknown
This is a standard 1960s Florida bascule bridge and it is unaltered from its original design.
Michigan Avenue Bridge
DuSable Bridge
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Michigan Avenue Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 400 ft. Main Span: 256 ft. Roadway: 64 ft. Main Spans: 1
Built 1920 By: Great Lakes Dredge and Dock Company of Chicago, Illinois and City of Chicago
The most famous Chicago bascule bridge, the bridgetender houses are very ornate on this double-deck bridge.
Monroe Street Bridge
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Monroe Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 271 ft. Main Span: 193 ft. Roadway: 36 ft. Main Spans: 1
Built 1919 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This bridge shows the transition between the early pony truss design and the later design.
Morrison Bridge
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Morrison Street Over Willamette River in Portland: Multnomah County, Oregon, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal 8 Panel Rivet-Connected Pratt Deck Truss, Fixed
Length: 3,125 ft. Main Span: 285 ft. Roadway: 68.6 ft. Main Spans: 1
Built 1958 By: American Bridge Company of New York, New York and Sverdrup and Parcel of St. Louis, Missouri
This bridge is one of Portland's younger historic bridges, and is an interesting comparison to the nearby Burnside Bridge.
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North Avenue Bridge
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North Avenue Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 273 ft. Main Span: 173 ft. Roadway: 36 ft. Main Spans: 1
Built 1907 By: American Bridge Company of New York, New York and City of Chicago
One of the oldest bridges in Chicago, historic significance and beauty were not enough to save this bridge from the dumpster.
Ocean Avenue Bridge
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Ocean Avenue (CR-18) Over Shark River in Belmar and Avon-by-the-Sea: Monmouth County, New Jersey, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Variable Depth Deck Girder, Fixed
Length: 339 ft. Main Span: 112 ft. Roadway: 40 ft. Main Spans: 1
Built 1932 By: Unknown and Ash, Howard, Needles, and Tammen of New York, New York
This bridge is an altered example of a patented variety of fixed trunnion bascule bridge, also noted for its approach span system.
Ohio Street Bridge
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Ohio Street (I-90 / I-94 Ramp) Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 367 ft. Main Span: 219 ft. Roadway: 76 ft. Main Spans: 1
Built 1961 By: Unknown and City of Chicago
An attractive and impressive deck truss bascule span carries an expressway ramp.
Park Street Bridge
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Park Street Over Oakland Estuary in Alameda and Oakland: Alameda County, California, United States
Metal Rivet-Connected Pratt Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Concrete Slab, Fixed
Length: 433 ft. Main Span: 285 ft. Roadway: 64.6 ft. Main Spans: 1
Built 1935 By: Mac Donald and Kahn of Los Angeles, California and County of Alameda Surveyors Office
Associated with Depression era relief programs, this is the wider of two nice looking historic bascule bridges in Alameda.
Paw Paw River Railroad Bridge
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Railroad (CSX) Over Paw Paw River in Benton Harbor: Berrien County, Michigan, United States
Metal Deck Girder, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Deck Girder, Fixed
Length: 123 ft. Main Span: 71 ft. Main Spans: 1
Built 1911 By: Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin
Although significantly altered and no longer able to raise for boats, this bridge is an unusual and perhaps unexpected bascule bridge.
Paw Paw River Railroad Bridge East
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Railroad (CSX) Over Paw Paw River in Benton Harbor: Berrien County, Michigan, United States
Metal Deck Girder, Movable: Bascule (Fixed Trunnion) and Approach Spans: Metal Deck Girder, Fixed
Length: 123 ft. Main Span: 46 ft. Main Spans: 1
Built 1915 By: Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin
This is one of two small bascule railroad bridges in the city which no longer open and have had all mechanics removed.
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Pont de Batiscan (Batiscan Bridge)
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QC-138 (Rue Principale) Over Rivière Batiscan in Batiscan: Mauricie, Québec, Canada
Metal Through Girder, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal 14 Panel Rivet-Connected Pennsylvania Through Truss, Fixed
Length: 1,214 ft. Main Span: 60 ft. Roadway: 18 ft. Main Spans: 1
Built 1920 By: MacKinnon Steel Corporation of Sherbrooke, Québec
This bridge, which may be unique among surviving bridges in the province, contains a tiny single leaf bascule span flanked by impressive through truss approach spans.
Pont Turcotte
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Route Marie-Victorin (QC-132) Over Rivière Richelieu in Sorel-Tracy: Montérégie, Québec, Canada
Metal Rivet-Connected Warren Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal 7 Panel Rivet-Connected Deck Truss, Fixed
Length: 889 ft. Main Span: 200 ft. Roadway: 39.4 ft. Main Spans: 1
Built 1932 By: Dominion Bridge Company of Montréal, Québec
This rare truss bascule bridge also has the design of a high level bridge.
Port Clinton Bridge
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OH-163 (Lakeshore Drive, Monroe Street) Over Portage River in Port Clinton: Ottawa County, Ohio, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Variable Depth Deck Girder, Fixed
Length: 344 ft. Main Span: 99 ft. Roadway: 40 ft. Main Spans: 1
Built 1933 By: A. Bentley and Sons of Toledo, Ohio and R. C. Mahon Company of Detroit, Michigan and Ohio State Highway Department
This is a beautiful, well-decorated, and rare example of a highway bascule bridge in Ohio.
Randolph Street Bridge
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Randolph Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Non-Historic, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 336 ft. Main Span: 213 ft. Roadway: 48 ft. Main Spans: 1
Built 1984 By: Unknown and Hazelet and Erdal of Chicago, Illinoisand City of Chicago
This non-historic bridge is listed only for comparitive purposes and for continuity of those using this website for a river tour.
Robert A Briant Sr. Memorial Bridge
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NJ-71 Over Shark River in Belmar and Avon-by-the-Sea: Monmouth County, New Jersey, United States
Metal Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Deck Girder, Fixed
Length: 860 ft. Main Span: 90 ft. Roadway: 50 ft. Main Spans: 1
Built 1932 By: Unknown and Ash, Howard, Needles, and Tammen of New York, New York
This bridge is an example of a patented variety of fixed trunnion bascule bridge, also noted for its approach span system.
Roosevelt Road Bridge
12th Street Bridge
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Roosevelt Road Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 258 ft. Main Span: 204 ft. Roadway: 71.9 ft. Main Spans: 1
Built 1928 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
This deck truss is similar to Ohio Street Bridge and is noted for its unique and very beautiful bridgetender buildings.
Ruby Street Bridge
Historic US Route 66 Bridge
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Historic US-66 (Ruby Street, Columbia Street, IL-53) Over Des Plaines River in Joliet: Will County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion)
Length: 396 ft. Main Span: 257 ft. Roadway: 44 ft. Main Spans: 1
Built 1935 By: Unknown and Scherzer Rolling Lift Bridge Company of Chicago, Illinois
This is Joliet's only trunnion bascule bridge, and it is part of old US-66.
Siesta Key Bridge
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Stickney Point Road (FL-72) Over Intracoastal Waterway in Siesta Key: Sarasota County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 564 ft. Main Span: 117 ft. Roadway: 28.2 ft. Main Spans: 1
Built 1968 By: Unknown
Although not a particularly old bascule bridge, this is noted for its design as a pair of bascule spans.
Siuslaw River Bridge
Florence Bridge
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Oregon Coast Highway (US-101) Over Siuslaw River in Florence: Lane County, Oregon, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Concrete Tied Rainbow Through Arch, Fixed
Length: 1,649 ft. Main Span: 154 ft. Roadway: 37 ft. Main Spans: 1
Built 1936 By: Mercer-Fraser Company of Eureka, California and Conde Balcom McCullough (Oregon State Highway Commission)
This spectacular bridge is richly ornamented and consists of an unusual combination of rainbow arch spans and a bascule span.
State Street Bridge
Bataan-Corregidor Memorial Bridge
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State Street Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 307 ft. Main Span: 245 ft. Roadway: 72 ft. Main Spans: 1
Built 1949 By: Overland Construction Company of Chicago, Illinois and City of Chicago
A wide truss bascule bridge in downtown Chicago, built in the 1940s.
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Tierra Verde Bridge
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FL-679 (Pinellas Bayway) Over Boca Ciega Bay in St. Petersburg and Tierra Verde: Pinellas County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 1,386 ft. Main Span: 136 ft. Roadway: 26 ft. Main Spans: 1
Built 1961 By: Unknown
This largely unaltered riveted plate girder bascule was replaced with a fixed high level bridge.
Tom Adams Bridge
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Beach Road Over Lemon Bay (Intracoastal Waterway) in Englewood: Charlotte County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 1,006 ft. Main Span: 103 ft. Roadway: 26 ft. Main Spans: 1
Built 1965 By: Unknown
This traditional 1960s welded girder bascule bridge has been altered by the replacement of the original bridgetender house.
Tom Stuart Causeway Bridge
Welch Causeway Bridge
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FL-666 (150th Avenue) Over Intracoastal Waterway (Boca Ciega Bay) in Madeira Beach: Pinellas County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 751 ft. Main Span: 141 ft. Roadway: 40 ft. Main Spans: 1
Built 1962 By: Unknown
This 1960s bascule bridge is a standard design, but has a replaced bridgetender house.
Tower Bridge
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A100 (Tower Bridge Road) Over River Thames in London: Greater London, England, United Kingdom
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Suspension, Fixed
Length: 880 ft. Main Span: 100 ft. Roadway: 21 ft. Main Spans: 1
Built 1894 By: Sir William Arrol and Company of Glasgow, Scotland and John Wolfe Barry
One of the most famous bridges in the world is also noted for its lack of alteration, unique appearance, and pioneering bascule design.
Van Buren Street Bridge
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Van Buren Street Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 267 ft. Main Span: 210 ft. Roadway: 44 ft. Main Spans: 1
Built 1956 By: Overland Construction Company of Chicago, Illinois and City of Chicago
One of a number of remaining similarly-designed bascule bridges in Chicago.
Venice Avenue Bridge
Colonel George Kumpe Bridge
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Venice Avenue (CR-772) Over Intracoastal Waterway in Venice: Sarasota County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 1,169 ft. Main Span: 145 ft. Roadway: 28 ft.
Built 1966 By: Unknown
This is a standard plan 1960s welded steel bascule bridge with long approaches.
Wabash Avenue Bridge
Irv Kupcinet Bridge
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Wabash Avenue Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Railing Height Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 345 ft. Main Span: 269 ft. Roadway: 57 ft. Main Spans: 1
Built 1930 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
An excellent early example of one of Chicago's unusual deck truss bascule bridges.
Washington Boulevard Bridge
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Washington Boulevard Over South Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 304 ft. Main Span: 197 ft. Roadway: 36 ft. Main Spans: 1
Built 1913 By: Strobel Steel Construction Company of Chicago, Illinois and City of Chicago
An impressive example of the early pony truss bascule design.
Washington Bridge
Devon Bridge
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US-1 Over Housatonic River in Milford: New Haven County, Connecticut and Fairfield County, Connecticut, United States
Metal 10 Panel Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Concrete Open Spandrel Deck Arch, Fixed
Length: 877 ft. Main Span: 183 ft. Roadway: 48 ft. Main Spans: 1
Built 1921 By: Bethlehem Steel Company of Bethlehem, Pennsylvania and T. Stuart and Sons of Watertown, Massachusetts and J. A. L. Waddell
This magnificent bridge features an impressive deck truss bascule flanked by graceful concrete arch approach spans.
Webster Avenue Bridge
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Webster Avenue Over North Branch Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 287 ft. Main Span: 189 ft. Roadway: 36 ft. Main Spans: 1
Built 1916 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
Among the northernmost of the Chicago bascule bridges, this one is also an older example.
Wells Street Bridge
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Wells Street and Railroad (Chicago Transit Authority "L" Brown and Purple Lines) Over Chicago River in Chicago: Cook County, Illinois, United States
Metal Rivet-Connected Warren Through Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 345 ft. Main Span: 268 ft. Roadway: 38 ft. Main Spans: 1
Built 1922 By: Ketler-Elliott Company of Chicago, Illinois and City of Chicago
One of the most impressive bridges in Chicago is this massive double-deck truss bascule bridge.
West CA-120 To South I-5 Ramp Bridge
Mossdale Highway Bridge
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West CA-120 To South I-5 Ramp Over San Joaquin River in Mossdale: San Joaquin County, California, United States
Metal Rivet-Connected Warren Through Truss, Movable: Single Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Continuous 6 Panel Rivet-Connected Warren Pony Truss, Fixed
Length: 583 ft. Main Span: 130 ft. Roadway: 27 ft. Main Spans: 1
Built 1948 By: Judson Pacific Murphy Company
This bridge is an unusual example of a fixed trunnion bascule bridge with an overhead counterweight and trunnion.
Wilson Pigott Bridge
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FL-31 Over Caloosahatchee River (Okeechobee Waterway) in Fort Myers Shores: Lee County, Florida, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Pre-Stressed Concrete Stringer (Multi-Beam), Fixed
Length: 778 ft. Main Span: 105 ft. Roadway: 28 ft. Main Spans: 1
Built 1960 By: Unknown
This 1960 bascule bridge carries traffic on a busy road.
Wrightsville Beach Bridge
C. Heide Trask Memorial Bridge
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US-74 and US-76 (Eastwood Road) Over Intracoastal Waterway in Wrightsville Beach Bridge: New Hanover County, North Carolina, United States
Metal Variable Depth Deck Girder, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Concrete T-Beam, Fixed
Length: 731 ft. Main Span: 170 ft. Roadway: 56.4 ft. Main Spans: 1
Built 1956 By: Unknown and L.O. Hopkins of Nashville, Tennessee
This is a large example of a plate girder bascule bridge and it is noted for its innovative machinery.
Youngs Bay Bridge
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Business US-101 (Warrenton-Astoria Highway) Over Youngs Bay in Astoria: Clatsop County, Oregon, United States
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Length: 1,845 ft. Main Span: 166 ft. Roadway: 20.3 ft. Main Spans: 1
Built 1921 By: Gilpin Construction Company of Portland, Oregon and Conde Balcom McCullough (Oregon State Highway Commission)
This is a graceful double-leaf bascule bridge, and is also noted for its unusual ornate combination of concrete and timber approach railings.

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