|November 2015 (39.8080, -120.4678) Union Pacific Railroad Bridges
cross over Willow Creek before going under North Gulling Street on the Portola Overhead (09 0100) (see photo below). Underpasses allow roads to go 'under' railroads and overheads allow roads to go 'over' railroads in Caltrans' parlance (railways probably have their own nomenclature).
The Portola Overhead is a 3 span steel girder bridge that was built in 1954. Note the well cars, with a well or depression that can carry double stacked shipping containers closer to the rails than the traditional flat car so they can go under bridges. Whoever invented shipping containers revolutionized commerce. The same container can be carried on a truck, a ship, or a train and it can be tracked with GPS software whether it's moving or stacked in a port.
Plumas County, California Bridges, Union Pacific Railroad Bridges by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.