|February 2014 (37.89072 Degrees, -121.57039 Degrees) Old River Bridge|
The Old River Bridge has Howe truss swing spans and Pratt truss approach spans. The bridge is 528 ft long with a 20 ft wide deck. It provides 15.5 ft of vertical clearance below the cross beam and 13 ft vertical clearance above the river in the closed position. The highway makes a sharp 'S' to cross the river at a right angle. Broad levees on each bank protect the surrounding farmland from flooding.
Contra Costa County, California Bridges, State Route 4 Bridge across the Old River by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.