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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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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
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
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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
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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
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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: Metal T-Beam, Fixed
Length: 948.2 ft. Main Span: 180 ft. Roadway: 17 ft. Main Spans: 3
Built 1922 By: Unknown
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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
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
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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
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
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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
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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: 1384 ft. Main Span: 120 ft. Roadway: 26.6 ft. Main Spans: 5
Built 1949 By: Judson Pacific Murphy Company
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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
!
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
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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
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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
!
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
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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
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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

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