Two of the major bridges in the canyon are the Northfork Bridge (concrete arch) in
the background, and the Pulga Bridge (steel arch) in the foreground.
The Western Pacific track was realigned due to the creation of Lake Oroville. This
realignment required the construction of the Northfork Bridge. Public access to this
bridge is very limited due to it’s location.
I built the Pulga Bridge in 1965 from an article in Model Railroader. In actuality
this is the highway 70 bridge, but on my WP it is a railroad bridge.
This is the Williams Loop, which the Western Pacific used to gain elevation as the
Southern Pacific did crossing the Tehachapi’s in Southern California.
The Pulga Bridge is located on the second level between Oroville and Keddie. The
track below with the small girder bridge is the Southern Pacific mainline to Sacramento.
The track below running under the bridge and through the tunnel is the Western Pacific
mainline between Stockton and Sacramento.