|June 2013 (38.91 Degrees, -122.30889 Degrees) Cache Creek Bridge
Apparently this bridge is an inexpensive way to provide access across Cache Creek by building a series of reinforced concrete box culverts across the river. This bridge is composed of six spans made up of a closed box, two open boxes, a closed box, and two more open boxes. Photos on the Bridgehunter Website show how the bridge looked during low river flows. It was closed in 2009.
I imagine even when the bridge was under water, it was still possible to drive on it to get across the creek. This is another example of a ford or causeway, which are used (especially in poor countries) to allow people to cross the river, at least when it isn't flooded.
Yolo County, California Bridges; County Road 40 Bridge across Cache Creek by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.