Its the "Keddie Wye"
The Keddie Wye is a favorite railfan spot at a wye located at Keddie, California, named after Arthur Keddie. Mr. Keddie purchased the survey rights and the right to build a railroad through the Feather River Canyon from George Jay Gould I, the son of Jay Gould. The west and north legs of the wye are on bridges over Spanish Creek, and the southeast leg runs through a tunnel (Tunnel No. 32). Just to the northwest, where the bridged legs join, is another tunnel (Tunnel No. 31).