|March 2013 (38.37225°, -120.96590°) State Route 104 Bridge
The next highway bridge carries State Route 104 (Ione Michigan Bar Road) over Dry Creek. It is a three span concrete box girder bridge on two-column bents. It's a very ordinary looking bridge that was built in 2005. The superstructure is 202 ft long with a 79 ft long center span. Unlike the previous bridge this one is on a major collector route and carries about 2000 vehicles a day. It is 44 ft wide with two traffic lanes and wide shoulders. It's obviously a cast-in-place concrete bridge since you can still see the grain of the plywood forms on the exterior girder.
I wonder if they were able to complete construction in a single year? I noticed that two of the columns are in the creek, which sometimes results in a shorter construction season so as not to negatively impact the environment. I asked my wife (we met when she was an environmental planner at Caltrans) but she said Dry Creek (at least near the bridge) has no endangered species.
Amador County, California Bridges: State Route 104 Bridge (26 0050) across Dry Creek by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.