View Information About HSR Ratings
This bridge is a very unusual bridge with an unusual history. Although it looks like a concrete truss bridge, it actually is a steel truss that was reused by encasing it with reinforced concrete. The bridge is not a simple concrete-encased metal truss bridge because not only was concrete added around the metal truss, a substantial amount of reinforcing rods and wires were added alongside the truss within the concrete. The steel truss and reinforcing rod system work together to give the bridge its load-bearing capacity. Therefore, the best way to think of the bridge today is a combination of a reinforced concrete truss and a steel truss. The metal truss was reportedly built in 1910 or 1906 depending on the source consulted. The bridge as seen today was constructed in 1918. If the date for the metal truss is correct, it did not have a long service life. Based on the original plans for the bridge, the metal truss structure was a very lightweight structure composed mostly of paired angles. It likely did not take the county long to realize that the truss was not very strong and would be better served by strengthening it to enable it to reliably carry heavier loads. The steel truss itself is a Warren truss, but it is not subdivided. When the concrete strengthening project took place, the bridge was turned into a subdivided Warren truss by adding verticals and floor beams. Therefore, every other vertical member and floor beam is pure reinforced concrete with no steel truss component inside.
Thanks are due to Stanislaus County for providing a copy of an original 1918 plan sheet for this bridge, which unraveled the mystery behind this unique bridge. HistoricBridges.org adapted the diagram on this page from this plan sheet to show the parts and construction of this 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.
Additional Maps:
Google Streetview (If Available)
GeoHack (Additional Links and Coordinates)
Apple Maps (Via DuckDuckGo Search)
Apple Maps (Apple devices only)
Android: Open Location In Your Map or GPS App
Flickr Gallery (Find Nearby Photos)
Wikimedia Commons (Find Nearby Photos)
Directions Via Sygic For Android
Directions Via Sygic For iOS and Android Dolphin Browser
USGS National Map (United States Only)
Historical USGS Topo Maps (United States Only)
Historic Aerials (United States Only)
CalTopo Maps (United States Only)
© Copyright 2003-2024, HistoricBridges.org. All Rights Reserved. Disclaimer: HistoricBridges.org is a volunteer group of private citizens. HistoricBridges.org is NOT a government agency, does not represent or work with any governmental agencies, nor is it in any way associated with any government agency or any non-profit organization. While we strive for accuracy in our factual content, HistoricBridges.org offers no guarantee of accuracy. Information is provided "as is" without warranty of any kind, either expressed or implied. Information could include technical inaccuracies or errors of omission. Opinions and commentary are the opinions of the respective HistoricBridges.org member who made them and do not necessarily represent the views of anyone else, including any outside photographers whose images may appear on the page in which the commentary appears. HistoricBridges.org does not bear any responsibility for any consequences resulting from the use of this or any other HistoricBridges.org information. Owners and users of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.
