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Historic Bridges: Sonoma County, California

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.

Total Bridges Found: 18

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Clarks Crossing Bridge
HSRNational HSR. Local HSR.
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Annapolis Road Over Gualala River in Rural: Sonoma County, California, United States
Metal 9 Panel Pin-Connected Parker Through Truss, Fixed
Length: 181 ft. Main Span: 181 ft. Roadway: 15.4 ft. Main Spans: 1
Built 1920 By: Unknown
This bridge is in the middle of nowhere and still has charm despite alteration.
Crocker Road Bridge
Cloverdale Bridge
HSRNational HSR. Local HSR.
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Crocker Road Over Russian River in Cloverdale: Sonoma County, California, United States
Metal 10 Panel Rivet-Connected Polygonal Warren Pony Truss, Fixed and Approach Spans: Metal Pin and Hanger Stringer (Multi-Beam), Fixed
Length: 528 ft. Main Span: 120 ft. Roadway: 23.3 ft. Main Spans: 3
Built 1938 By: Unknown
With a new substructure and interesting seismic retrofits, this three span pony truss is composed of rolled beams making it look newer than it is.
D Street Bridge
HSRNational HSR. Local HSR.
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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!
Geysers Road Bridge
HSRNational HSR. Local HSR.
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Geysers Road Over Big Sulphur Creek in Rural: Sonoma County, California, United States
Metal 7 Panel Pin-Connected Pratt Through Truss, Fixed
Length: 149 ft. Main Span: 130 ft. Roadway: 13 ft. Main Spans: 1
Built By: Unknown
This beautiful and rare bridge with Phoenix columns is hidden away on an extremely rural and highly scenic road.
Guerneville Bridge
HSRNational HSR. Local HSR.
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Pedestrian Walkway (Former CA-116 Alignment) Over Russian River in Guerneville: Sonoma County, California, United States
Metal 10 Panel Pin-Connected Parker Through Truss, Fixed and Approach Spans: Concrete T-Beam, Fixed
Length: 948 ft. Main Span: 180 ft. Roadway: 17 ft. Main Spans: 3
Built 1922 By: Unknown
One of several bridges on the Russian River that are late but noteworthy examples of pin-connected truss bridges.
Hacienda Bridge
HSRNational HSR. Local HSR.
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River Road Over Russian River in Rural: Sonoma County, California, United States
Metal 7 Panel Pin-Connected Camelback Through Truss, Fixed and Approach Spans: Concrete Slab, Fixed
Length: 531 ft. Main Span: 200 ft. Roadway: 25.3 ft. Main Spans: 1
Built 1914 By: American Bridge Company of New York, New York
This attractive and uncommon Camelback truss bridge has 1947 concrete approach spans, evidence that the truss span is a relocated and reused span.
Haupt Creek Bridge
Stewarts Point - Skaggs Springs Road Bridge
HSRNational HSR. Local HSR.
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Stewarts Point - Skaggs Springs Road Over Haupt Creek in Rural: Sonoma County, California, United States
Metal 7 Panel Pin-Connected Pratt Through Truss, Fixed
Length: 134 ft. Main Span: 130 ft. Roadway: 13 ft. Main Spans: 1
Built By: Unknown
This extremely rare Phoenix column truss bridge is surrounded by redwood trees on this scenic rural road.
X
Haystack's Landing Bridge
McNear Bridge
HSRNational HSR. Local HSR.
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Railroad (SMART) Over Petaluma River in Petaluma: Sonoma County, California, United States
Metal Rivet-Connected Through Truss, Movable: Swing (Center Pier)
Main Span: 180 ft. Roadway: 16 ft. Main Spans: 1
Built 1903 By: Unknown
This is a traditionally but fairly short example of a railroad truss swing bridge.
Healdsburg Memorial Bridge
Redwood Highway Bridge
HSRNational HSR. Local HSR.
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Healdsburg Avenue (Former Redwood Highway) Over Russian River in Healdsburg: Sonoma County, California, United States
Metal 10 Panel Pin-Connected Pennsylvania Through Truss, Fixed
Length: 438 ft. Main Span: 198 ft. Roadway: 21 ft. Main Spans: 2
Built 1921 By: American Bridge Company of New York, New York and J. C. Lewis
This magnificent bridge is a centerpiece and gateway for Healdsburg and is being preserved for future generations to enjoy.
Healdsburg Railroad Bridge
HSRNational HSR. Local HSR.
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Railroad (Northwestern Pacific) Over Russian River in Healdsburg: Sonoma County, California, United States
Metal 7 Panel Pin-Connected Camelback Through Truss, Fixed and Approach Spans: Metal 4 Panel Rivet-Connected Pratt Through Truss, Fixed
Length: 375 ft. Main Span: 181 ft. Main Spans: 1
Built 1921 By: Unknown
This interesting railroad bridge has two distinctly different span designs.
Jimtown Bridge
HSRNational HSR. Local HSR.
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Alexander Valley Road Over Russian River in Rural: Sonoma County, California, United States
Metal Continuous 10 Panel Rivet-Connected Warren Pony Truss, Fixed and Approach Spans: Concrete Cantilever Girder, Fixed
Length: 1,384 ft. Main Span: 120 ft. Roadway: 26.6 ft. Main Spans: 5
Built 1949 By: Judson Pacific Murphy Company
This is a highly unusual continuous pony truss that also has cantilevered girder approach spans.
!
Lambert Bridge
HSRNational HSR. Local HSR.
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Lambert Bridge Road Over Dry Creek in Rural: Sonoma County, California, United States
Metal 10 Panel Pin-Connected Parker Through Truss, Fixed
Length: 190 ft. Main Span: 185 ft. Roadway: 16.4 ft. Main Spans: 1
Built 1915 By: American Bridge Company of New York, New York
This nice looking bridge is feasible to rehabilitate, but instead will be demolished and replaced!
!
Monte Rio Bridge
Bohemian Highway Bridge
HSRNational HSR. Local HSR.
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Bohemian Highway Over Russian River in Rural: Sonoma County, California, United States
Metal 6 Panel Rivet-Connected Pratt Full-Slope Pony Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Length: 772 ft. Main Span: 100 ft. Roadway: 20 ft. Main Spans: 5
Built 1934 By: Unknown
This uncommon multi-span pony truss has a suprisingly streamlined appearance.
Old Duncans Bridge
HSRNational HSR. Local HSR.
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Old Duncans Grade Road Over Austin Creek in Rural: Sonoma County, California, United States
Metal 6 Panel Rivet-Connected Pratt Through Truss, Fixed
Length: 265 ft. Main Span: 117 ft. Roadway: 16.7 ft. Main Spans: 2
Built 1924 By: Unknown
This two span through truss a short distance off of the main road has been closed to traffic.
Point Reyes Petaluma Road Bridge
HSRNational HSR. Local HSR.
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Point Reyes Petaluma Road (Old Alignment) Over San Antonio Creek in Rural: Sonoma County, California and Marin County, California, United States
Concrete Deck Girder, Fixed
Length: 96 ft. Main Span: 42 ft. Roadway: 16 ft. Main Spans: 3
Built 1919 By: Unknown
Abandoned on old alignment, this is an unusual curved deck girder.
!
Watmaugh Road Bridge
Hopke Bridge
HSRNational HSR. Local HSR.
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Watmaugh Road Over Sonoma Creek in Rural: Sonoma County, California, United States
Metal 12 Panel Rivet-Connected Polygonal Warren Through Truss, Fixed and Approach Spans: Concrete T-Beam, Fixed
Length: 170 ft. Main Span: 103 ft. Roadway: 22.3 ft. Main Spans: 1
Built 1929 By: W. L. Proctor of Santa Rosa, California and E. A. Peugh of Santa Rosa, California
Despite its decent physical condition, widespread local preservation support, and previous preservation work, this unusual pony truss bridge is to be demolished!
Westside Road Bridge
HSRNational HSR. Local HSR.
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Westside Road Over Dry Creek in Rural: Sonoma County, California, United States
Metal 5 Panel Rivet-Connected Pratt Full-Slope Pony Truss, Fixed
Length: 330 ft. Main Span: 80 ft. Roadway: 24 ft. Main Spans: 4
Built 1934 By: Judson Pacific Company of San Francisco, California
This multi-span pony truss has an added sidewalk and replaced piers.
Wohler Bridge
HSRNational HSR. Local HSR.
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Wohler Road Over Russian River in Rural: Sonoma County, California, United States
Metal 10 Panel Pin-Connected Parker Through Truss, Fixed and Approach Spans: Concrete Stringer (Multi-Beam), Fixed
Length: 768 ft. Main Span: 230 ft. Roadway: 16.7 ft. Main Spans: 1
Built 1921 By: American Bridge Company of New York, New York
This is an uncommon example of a Camelback truss and is also noted for its multi-span configuration.

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