Status: Open to traffic
Location: 30.271678,-89.793302
Carries LA 433 over Bayou Bonfouca
Design: other
Design Details: Swing
Total Length: 325.0 Feet
Span Length: 245.0 Feet
Overview: Swing bridge plate girder over Bayou Bonfouca on LA 433
History: Built 1976
Built: 1976
Location: St. Tammany Parish
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439172
Bayou Bonfouca Bridge
Photo taken by David Grunfeld
439173
Bayou Bonfouca Bridge
Still in operation
Photo taken by Douglas Butler in December 2018
Status: Open to traffic
Location: 30.313852,-89.935558
Carries US 190 over Bayou Lacombe
Design: other
Design Details: Swing
Total Length: 319.8 Feet
Span Length: 129.9 Feet
Overview: Swing bridge over Bayou Lacombe on US 190 in Lacombe
History: Built 1938
Built: 1938
Location: St. Tammany Parish
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Status: Replaced by a new bridge
Location: 30.268056,-89.844167
Carries LA 433 over Bayou Liberty
Design: other
Design Details: Swing
Total Length: 211.9 Feet
Span Length: 120.0 Feet
Overview: Swing bridge over Bayou Liberty on LA 433
History: Built 1981; replaced 2010
Built: 1981
Location: St. Tammany Parish
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283867
Bayou Liberty road bridge
Louisiana
Photo taken by Douglas Butler in June 2013
291718
Bayou Liberty LA 433 Bridge
Louisiana
Photo taken by Douglas Butler in June 2013
Status: Open to traffic
Location: 30.236924,-89.629077
Carries US 90 over East Middle Pearl River
Design: truss/pony/polygonal
Design Details: Three-span polygonal Warren pony truss
Total Length: 581.8 Feet
Span Length: 80.0 Feet
Overview: Pony truss bridge over East Middle Pearl River on US 90
History: Built 1933
Built: 1933
Location: St. Tammany Parish
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139348
West Approach
Photo taken by David Backlin in April 2009
139349
Side View
Photo taken by David Backlin in April 2009
139350
Deck View
Photo taken by David Backlin in April 2009
Status: Open to traffic
Location: 30.239122,-89.614599
Carries US 90 over East Pearl River
Design: truss/through/parker
Design Details: Swing Parker through truss
Total Length: 960.7 Feet
Span Length: 279.7 Feet
Overview: Swing bridge over East Pearl River on US 90
History: Built 1933 by the Wisconsin Bridge & Iron Co.
Built: 1934
Location: St. Tammany Parish
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139251
Side View
Photo taken by David Backlin in April 2009
139252
West Approach
Photo taken by David Backlin in April 2009
139253
West Portal
Photo taken by David Backlin in April 2009
139254
Oblique View
Photo taken by David Backlin in April 2009
139255
Pivot
Photo taken by David Backlin in April 2009
169433
Looking east from main span, Rigolets Pass RR Bridge in background
Photo taken by Nathan Morton in July 2010
198640
East Pearl River US 90 Bridge Builder Plaque
Photo taken by C Hanchey in May 2011
263642
Photo taken by Douglas Butler
324252
Photo taken by william blackwell
324253
Photo taken by william blackwell
324254
Photo taken by william blackwell
394051
West Approach
Photo taken by John Christeson in June 2017
Status: Open to two lanes of toll southbound traffic and two lanes of free northbound traffic
Location: 30.196102,-90.123323
Carries Lake Pontchartrain Causeway over Lake Pontchartrain
Design: beam
Design Details:
Total Length: 126061.3 Feet
Span Length: 180.1 Feet
Overview: Pair of prestressed concrete bridges over Lake Pontchartrain with a length of nearly 24 miles
History: First bridge built 1956
Built: 1956
Location: St. Tammany Parish
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103406
Driving northbound
Photo taken by James Baughn
103407
Approaching the drawbridge
Photo taken by James Baughn
103408
Crossing the drawbridge
Photo taken by James Baughn
103409
Northern end
Photo taken by James Baughn
261075
Photo taken by Douglas Butler
394053
Photo taken by John Christeson in June 2017
394054
Photo taken by John Christeson in June 2017
394055
Photo taken by John Christeson in June 2017
394056
Photo taken by John Christeson in June 2017
394057
Photo taken by John Christeson in June 2017
Status: Open to traffic
Location: 30.235555,-89.638862
Carries US 90 over Middle Middle Pearl River
Design: truss/pony/polygonal
Design Details: Three-span polygonal Warren pony truss
Total Length: 581.8 Feet
Span Length: 80.0 Feet
Overview: Pony truss bridge over Middle Middle Pearl River on US 90
History: Built 1933
Built: 1933
Location: St. Tammany Parish
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139353
Oblique View
Photo taken by David Backlin in April 2009
139354
West Approach
Photo taken by David Backlin in April 2009
Status: Open to traffic
Location: 30.404369,-90.154478
Carries LA 22 over Tchefuncte River
Design: other
Design Details: Swing
Total Length: 502.8 Feet
Span Length: 180.0 Feet
Overview: Swing bridge over Tchefuncte River on LA 22 at Madisonville
History: Built ca. 1980
Built: ca. 1980
Location: St. Tammany Parish
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284856
Tchefuncte River LA 22 Bridge
Louisiana
Photo taken by Douglas Butler in April 2013
487931
Tchefuncte River Bridge LA
Photo taken by Tripadviser
Status: Open to traffic
Location: 30.234518,-89.645852
Carries US 90 over West Middle River
Design: truss/pony/polygonal
Design Details: Three-span polygonal Warren pony truss
Total Length: 581.8 Feet
Span Length: 80.0 Feet
Overview: Pony truss bridge over West Middle River on US 90
History: Built 1933
Built: 1933
Location: St. Tammany Parish
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139355
Cloes-up of Trusses
Photo taken by David Backlin in April 2009
139356
Oblique View
Photo taken by David Backlin in April 2009
139357
West Approach
Photo taken by David Backlin in April 2009
Status: Open to traffic
Location: 30.231206,-89.668865
Carries US 90 over West Pearl River
Design: other
Design Details: Vertical lift
Total Length: 569.7 Feet
Span Length: 109.9 Feet
Overview: Vertical lift bridge over West Pearl River on US 90
History: Built 1933
Built: 1933
Location: St. Tammany Parish
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138164
Oblique View
Photo taken by David Backlin in April 2009
138169
West Approach
Photo taken by David Backlin in April 2009
264938
US 90 Bridge
Louisiana
Photo taken by Douglas Butler in April 2013
295903
West Pearl River US 90 Bridge
Photo taken by Irma Hale in June 2014
296067
West Pearl River US 90 Bridge
Louisiana
Photo taken by Douglas Butler in October 2013
324375
Photo taken by william blackwell in May 2015
324376
Photo taken by william blackwell in May 2015
324377
Photo taken by william blackwell in May 2015
394052
West Approach
Photo taken by John Christeson in June 2017
Status: Open to traffic
Slated to be replaced Summer 2010 for a cost of $1.1 million
Location: 30.286871,-89.954506
Carries Lake Road over Powell Canal
Design: beam/stringer/steel
Design Details: Steel stringer with wooden supports
Total Length: 74.2 Feet
Span Length: 35.1 Feet
Overview: Steel stringer bridge over Powell Canal on Lake Road
History: Built ca. 1960
Built: 1960
Location: St. Tammany Parish
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Status: Open to traffic
Location: 30.337500,-90.003056
Carries US 190 over Cane Bayou
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 121.1 Feet
Span Length: 29.9 Feet
Overview: Concrete tee beam bridge over Cane Bayou on US 190
History: Built 1932
Built: 1932
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.337500,-90.003056
Carries US 190 over Cane Bayou
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 121.1 Feet
Span Length: 29.9 Feet
Overview: Concrete tee beam bridge over Cane Bayou on US 190
History: Built 1932
Built: 1932
Location: St. Tammany Parish
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Status: Open to traffic
Location: 30.159130,-89.871890
Carries Norfolk Southern Railway (former Southern Railway) over Lake Pontchartrain
Design: truss/through/warren
Design Details: Draw span: Bascule Warren through truss
Rest of bridge: Concrete stringers
Total Length: 30624.0 Feet
Span Length: 0.0 Feet
Overview: Bascule bridge over Lake Pontchartrain on Norfolk Southern Railway (former Southern Railway)
History: Originally built 1884. several upgrades have been made since
Built: 1884
Location: St. Tammany Parish
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169429
North End of trestle at Slidell
Photo taken by Nathan Morton in July 2010
169430
Looking northwest from US Hwy 11 towards bridge
Photo taken by Nathan Morton
294403
NS - Lake Ponchartrain Bridge
Raised
Photo taken by Douglas Butler
294404
NS - Lake Ponchartrain Bridge
Raising
Photo taken by Douglas Butler in March 2013
298299
NS-Lake Ponchartrain Trestle
Bascule Bridge on NS RR. Looking West
Photo taken by Royce and Bobette Haley in May 2014
298300
NS-Lake Ponchartrain Trestle
Bascule Bridge on NS RR. Looking West
Photo taken by Royce and Bobette Haley in May 2014
298301
NS-Lake Ponchartrain Trestle
Bascule Bridge on NS RR. Looking West
Photo taken by Royce and Bobette Haley in May 2014
298302
NS-Lake Ponchartrain Trestle
Bascule Bridge on NS RR. Looking West
Photo taken by Royce and Bobette Haley in May 2014
298303
NS-Lake Ponchartrain Trestle
Bascule Bridge on NS RR. Looking West
Photo taken by Royce and Bobette Haley in May 2014
344321
NS - Lake Pontchartrain Rail Bridge
Raised
Photo taken by Douglas Butler in December 2015
344322
NS - Lake Pontchartrain Rail bridge
Lowered
Photo taken by Douglas Butler in December 2015
Status: Removed but not replaced
Location: 30.385916,-89.738186
Carries Old US 11 over West Pearl River
Design: unknown
Design Details: One 216 ft. steel draw span, two 120 ft. steel truss spans on concrete piers, with cresoted timber approaches.
Total Length: 730.0 Feet
Span Length: 0.0 Feet
Overview: Lost bridge over West Pearl River on Old US 11 (originally US 90)
History: Built 1926; removed 1970s
Built: 1926
Location: St. Tammany Parish
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467339
West Pearl River Bridge (October 1926)
The West Pearl River Bridge on what was then the Old Spanish Trail, pictured in October 1926 shortly before completion.
The Times-Picayune, October 24, 1926, sec. 4, p. 7
467347
Photo taken by Douglas Butler in March 2020
467407
US 11 Bridge
Removed
Photo taken by Douglas Butler in March 2020
Status: Open to traffic
LA DOTD plans to replace with new four-lane structure.
Location: 30.294871,-89.776282
Carries US 11 over Norfolk Southern Railway
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 828.1 Feet
Span Length: 44.0 Feet
Overview: Steel stringer bridge over Norfolk Southern Railway on US 11
History: Built 1938
Built: 1938
Location: St. Tammany Parish
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159080
South Embankment with Date Imprint
Photo taken by David Backlin in March 2010
159081
South Approach
Photo taken by David Backlin in March 2010
159082
North Approach
Photo taken by David Backlin in March 2010
Status: Open to traffic
Location: 30.385463,-89.737145
Carries Norfolk Southern Railroad over Pearl River, West Fork
Design: truss/through/pratt
Design Details: 4 span Pratt swing bridge
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Railroad swing bridge over Pearl River, West Fork navigation channel on Norfolk Southern Railroad
History:
Built:
Location: St. Tammany Parish
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168237
Photo taken by Calvin Sneed in June 2010
168238
Photo taken by Calvin Sneed in June 2010
168239
Photo taken by Calvin Sneed in June 2010
168240
Photo taken by Calvin Sneed in June 2010
168241
Photo taken by Calvin Sneed in June 2010
168242
Photo taken by Calvin Sneed in June 2010
168243
Photo taken by Calvin Sneed in June 2010
168244
Photo taken by Calvin Sneed in June 2010
168245
Photo taken by Calvin Sneed in June 2010
168246
Photo taken by Calvin Sneed in June 2010
168247
Photo taken by Calvin Sneed in June 2010
168248
Photo taken by Calvin Sneed in June 2010
168249
Photo taken by Calvin Sneed in June 2010
168250
Photo taken by Calvin Sneed in June 2010
168251
Photo taken by Calvin Sneed in June 2010
264105
Photo taken by Douglas Butler
Status: Open to pedestrians and cyclists only
Location: 30.305230,-89.925806
Carries Tammany Trace Bike Trail (formerly Illinois Central Railroad) over Lacombe Bayou
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Bridge over Lacombe Bayou on Tammany Trace Bike Trail (formerly Illinois Central Railroad)
History: Built 2008
Built: 2008
Location: St. Tammany Parish
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238295
Photo taken by Flickr user galaxed
263939
Tammany Trace Trail - Lacombe Bayou Bridge
This bridge is a bascule draw that raises as a see saw
Photo taken by Douglas Butler
293373
Tammay Trace Bike Trail - Lacombe Bayou Bridge
This rail swing bridge used to open and was operated by the Illinois Central railroad, however the trussed bascule drawbridge was built for bikes
Photo taken by Douglas Butler in March 2013
Status: Derelict/abandoned
Location: 30.493875,-90.169852
Carries Illinois Central Railroad over Tchefuncte River
Design: truss/through/warren
Design Details: Pinned Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Abandoned Warren through truss bridge over Tchefuncte River on Illinois Central Railroad
History:
Built:
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.351435,-90.037552
Carries US-190 over Bayou Castine
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 150.9 Feet
Span Length: 29.9 Feet
Overview: Concrete tee beam bridge over Bayou Castine on US-190
History: Built 1932
Built: 1932
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.315778,-89.925312
Carries US-190 over Big Branch
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 121.1 Feet
Span Length: 29.9 Feet
Overview: Concrete tee beam bridge over Big Branch on US-190
History: Built 1932
Built: 1932
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.464120,-90.117639
Carries LA-21 over Tchefuncte River
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 589.9 Feet
Span Length: 60.0 Feet
Overview: Steel stringer bridge over Tchefuncte River on LA-21
History: Built 1950
Built: 1950
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.301774,-89.830620
Carries US-190 over Bayou Liberty
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 150.9 Feet
Span Length: 29.9 Feet
Overview: Concrete tee beam bridge over Bayou Liberty on US-190
History: Built 1933
Built: 1933
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.416461,-89.831654
Carries LA-36 over Former Illinois Central Gulf Railroad
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 209.0 Feet
Span Length: 44.9 Feet
Overview: Steel stringer bridge over Former Illinois Central Gulf Railroad on LA-36
History: Built 1937
Built: 1937
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.291180,-89.790208
Carries US-190 over Bayou Bonfouca
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 181.1 Feet
Span Length: 29.9 Feet
Overview: Concrete tee beam bridge over Bayou Bonfouca on US-190
History: Built 1933
Built: 1933
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.493925,-90.167123
Carries US-190 over Slough
Design: slab
Design Details: Slab
Total Length: 140.1 Feet
Span Length: 20.0 Feet
Overview: Slab bridge over Slough on US-190
History: Built 1941
Built: 1941
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Railroad line closed and removed; bridge demolished and replaced with blacktop
Location: 30.617222,-89.901667
Carries LA-21 over Former Illinois Central Gulf Railroad
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 151.9 Feet
Span Length: 29.9 Feet
Overview: Lost Steel stringer bridge over Former Illinois Central Gulf Railroad on LA-21
History: Built 1933
Built: 1933
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 30.303464,-89.641464
Carries I-10 over East Pearl River
Design: girder
Design Details: Girder non operable bascule
Total Length: 4987.1 Feet
Span Length: 165.0 Feet
Overview: Girder bridge over East Pearl River on I-10
History: Built 1970
Built: 1970
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
456366
Photo taken by
Status: Open to traffic
Location: 30.297592,-89.702301
Carries I-10 over West Pearl River
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 2280.0 Feet
Span Length: 144.0 Feet
Overview: Pair of steel stringer bridges over West Pearl River on I-10
History: Built 1970
Built: 1970
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Replaced by a new bridge
Location: 30.476491,-90.089399
Carries US 190 BUS / LA 21 over Bogue Falaya River
Design: beam/stringer/steel
Design Details: Combination steel, timber, and concrete trestle with earth approaches
Total Length: 399.0 Feet
Span Length: 18.0 Feet
Overview: Lost steel stringer bridge over Bogue Falaya River on US 190 BUS / LA 21
History: Built 1929; replaced 1993
Built: 1929
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
Status: Derelict/abandoned
Location: 30.631220,-89.900165
Carries Illinois Central Railroad over Bogue Chitto River
Design: truss/through/double-warren
Design Details: Double-intersection Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Abandoned through truss bridge over Bogue Chitto River on Illinois Central Railroad
History:
Built:
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
246619
David Schexnaydre
Status: Open to traffic
Location: 30.461389,-89.695556
Carries US Highway 11 & I-59 over East Pearl River & Honey Island Swamp Road
Design: beam
Design Details: Beam
Total Length: 400.0 Feet
Span Length: 89.9 Feet
Overview: Beam bridge over East Pearl River & Honey Island Swamp Road on US Highway 11 & I-59
History: Built 1958
Built: 1958
Location: St. Tammany Parish
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254936
Status: A Bascule draw built across of bike traffic
Location: 30.304785,-89.925788
Carries Former Illinois Central Railroad over Lacombe Bayou
Design: girder/pony/plate
Design Details: 1 151' Pony plate girder swing
Total Length: 0.0 Feet
Span Length: 151.0 Feet
Overview: Pony plate girder swing bridge over Lacombe Bayou on Former Illinois Central Railroad
History: Built 1907; Removed 2008
Built: 1907
Location: St. Tammany Parish
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293385
IC - Lacombe Bayou Bridge (Old)
Louisiana
Photo taken by Douglas Butler in March 2013
439171
IC - Lacombe Bayou Bridge (Old)
Once carried railroad
Photo taken by Douglas Butler in December 2018
Status: Removed but not replaced
Location: 30.394737,-90.199939
Carries New Orleans & Northeastern over Tchefuncte River
Design: truss/through
Design Details: Through truss swing
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost through truss bridge over Tchefuncte River on New Orleans & Northeastern
History:
Built:
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
289439
NO&N (NS) - Tchefuncte River Bridge
Louisiana
Photo taken by Douglas Butler
439153
St Tam.Parish LA railroad bridge
Status: Replaced by a new bridge
Location: 30.267959,-89.844139
Carries Louisiana Route 433 over Liberty Bayou
Design: other
Design Details: Concrete stringer wooden swing
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Concrete stringer wooden bridge over Liberty Bayou on Louisiana Route 433
History: Built in 1941; replaced 1980
Built: 1941
Location: St. Tammany Parish
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385313
Photo taken by Douglas Butler in April 2017
291719
Liberty Bayou Bridge
Replaced
Photo taken by Douglas Butler in June 2013
487932
BayouLibertyBridgePhoto2
Photo taken by Tammany Family
487933
BayouLibertyBridgePhoto3
Photo taken by Tammany Family
Status: Open to traffic
Location: 30.422083,-90.096567
Carries Belle Terre Blvd. over Tributary of Ponchitolawa Creek
Design: culvert/stone
Design Details: Stone culvert
Total Length: 38.1 Feet
Span Length: 11.2 Feet
Overview: Stone culvert bridge over a tributary of Ponchitolawa Creek on Belle Terre Blvd.
History: Built 1936
Built: 1936
Location: St. Tammany Parish
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334549
LA DOTD
492595
Belle Terre Bridge
north side view
Photo taken by Brian R. Warren in February 2021
Status: Replaced by a new bridge
Location: 30.195836,-89.754794
Carries LA 433 (formerly US 90 and US 11/190) over Salt Bayou
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over Salt Bayou on LA 433 (formerly US 90 and US 11/190)
History: Built 1929; replaced 1955
Built: 1929
Location: St. Tammany Parish
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467338
Salt Bayou Bridge (May 1929)
The first permanent bridge across Salt Bayou on what was then US 90, as it appeared shortly after its opening in May 1929.
The Times-Picayune, May 12, 1929, sec. 4, p. 1
467346
Photo taken by Douglas Butler in March 2020
Status: Replaced by a new bridge
Location: 30.314099,-89.937281
Carries US 190 over Bayou Lacombe
Design: unknown
Design Details: Steel swing span
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over Bayou Lacombe on US 190
History: Built 1916; replaced 1938
Built: 1916
Location: St. Tammany Parish
View Bridge Information In Wayback Machine
467807
Lacombe Bridge (September 1929)
The previous bridge on US 190 in Lacombe, pictured in September 1929.
The Times-Picayune, September 8, 1929, sec. 3, p. 1
475023
Tech drawing by Douglas Butler
Photo taken by Douglas Butler in June 2019
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.
