|December 2013 (38.50707 Degrees, -122.49192 Degrees) Spring Mountain Road Bridges|
The next bridge has some of the stones from the top of the barrier missing. It looks like they built the arch, then the spandrel wall, then a stone bridge deck, and finally a stone barrier wall on top.The last bridge uses red stones for the arch. Note that York Creek flows at a sharp angle to this bridge.
All three bridges have plaques with the completion date and the names of the county supervisors at the time the bridges were built.
The Spring Mountain Road Bridges are similar to those on Stanley Lane that we studied on December 3rd. However, these bridges are still carrying trucks and cars. Spring Mountain Road carries 1500 vehicles a day and the bridges have sufficiency ratings of about 50.
Napa County, California Bridges: Spring Mountain Road Bridges across York Creek by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.