Eureka Southern Railroad
Reporting mark: EUKA
NWP - Alderpoint Bridge (Humboldt County, California)
Built 1913 by the American Bridge Co.Through truss bridge over Eel River on Northwestern Pacific Railroad (NWP)Closed to all traffic
NWP - Cain Rock Bridge (Humboldt County, California)
Built 1910; 2 northern spans lost during 1964 flood and replaced.Pratt and Warren through truss bridge over Eel River on Northwestern Pacific RailroadClosed to all traffic
NWP - Van Duzen River Bridge (Humboldt County, California)
Built 1913Pratt through truss bridge over Van Duzen River on Eureka Southern RailroadClosed to all traffic