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US-17 St. Marys River Bridge

US-17 St. Marys River Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: November 15, 2014

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and Videos
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Facility Carried / Feature Intersected
US-17 (Atlantic Coastal Highway) Over St. Marys River
Location
Rural: Nassau County, Florida and Camden County, Georgia: United States
Structure Type
Metal 12 Panel Rivet-Connected Polygonal Warren Through Truss, Movable: Swing (Center Bearing Center Pier) and Approach Spans: Metal 8 Panel Rivet-Connected Polygonal Warren Pony Truss, Fixed
Construction Date and Builder / Engineer
1927 By Builder/Contractor: Virginia Bridge and Iron Company of Roanoke, Virginia
Rehabilitation Date
2005
Main Span Length
202.0 Feet (61.6 Meters)
Structure Length
562.0 Feet (171.3 Meters)
Roadway Width
19.7 Feet (6 Meters)
Spans
1 Main Span(s) and 8 Approach Span(s)
Inventory Number
740008

Historic Significance Rating (HSR)
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Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historic Bridge Inventory Sheet For This Bridge

This bridge is an attractive, impressive, and regionally rare example of a through truss swing bridge. At either end of the swing span is a pony truss approach span. Additional approach spans are concrete t-beam spans.

The Pensacola Shipbuilding Company of Pensacola, Florida was the contractor for the bridge. Virginia Bridge and Iron Company fabricated and erected the trusses, while A. Bentley and Sons of Toledo, Ohio erected the substructure and approaches. Learn about A. Bentley and Sons of Toledo, Ohio on another bridge's page.

US-17 and this bridge were part of the main federal highway into Florida for travelers from the Northeastern United States when first built. Therefore, this bridge is significant as part of an early alignment of a major travel corridor that has a major economic effect on Florida. I-95 serves the purpose of US-17 today.

The bridge was rehabilitated in 2005. A lot of rivets were replaced with bolts including as part of member strengthening in some areas. At the same time, it was interesting to note that a couple isolated areas of complete section loss were not repaired and were simply painted over. Overall however, the bridge is a good example of a rehabilitated historic truss bridge. The bridge's hand-turned movable components appear to be maintained in working condition, and new equipment (likely dating to the 2005 rehabilitation) for greasing rollers and bearings were observed, suggesting the bridge can still be operated. At the same time, it is questionable whether the bridge ever does operate. If it does, it would be a major operation requiring temporary barricades since there are no gates at the ends of the bridge.

Be sure to view the extensive photo gallery for this bridge which includes detail photos of all mechanical components on the swing pier.

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Photo Galleries and Videos: US-17 St. Marys River Bridge

 

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Bridge Photo-Documentation

Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer.
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View Photo Gallery

Bridge Photo-Documentation

Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer.
Alternatively, Browse Without Using Viewer

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View Video

CarCam: Northbound Crossing

Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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View Video

CarCam: Southbound Crossing

Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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Maps and Links: US-17 St. Marys River Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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