|August 2014 (38.3508 Degrees, -122.5189 Degrees) Arnold Drive Bridge|
This area was called "Valley of the Moon' by the writer Jack London and is a major wine producing region. The bridge was built in 1930 and remains in 'good' condition but with a poor deck. It's the deck that goes first on bridges. Trucks keep getting heavier and older structures can't sustain all the traffic (14,000 vehicles a day).
The Arnold Drive Bridge is 140 ft long, 24 ft wide, but with a vertical clearance of only 12.7 ft. I'm surprised that the portal frames haven't been damaged by tall vehicles during the last 84 years. The bridge has a plaque that says that it's a Sonoma historic landmark. It also says that the bridge was designed by E. A. Peugh. I went online and found (on the Historic Bridges Website) that he (she?) had designed several other truss bridges in Sonoma County.
Sonoma County, California Bridges: Arnold Drive Bridge across Sonoma Creek by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.