Road and railroad tracks passing under a grade separation, 1930-1949 

N and O Streets grade separation over Santa Fe Railroad tracks, October 1936 

Railroad bridge grade separation on an unknown street, ca.1930-1939 

Concrete viaduct crossing a street and railroad tracks, [s.d.] 

View of railroad tracks under a concrete viaduct in Los Angeles, [s.d.] 

Grade separation at Figueroa and Temple, 1930-1949 

Concrete viaduct crossing a street and railroad tracks, [s.d.] 

View of railroad tracks passing under a wooden viaduct in Los Angeles, [s.d.] 

View of Soto Street grade separation after consturction under the Union Pacific Railroad tracks, 1937 

View of the Tunnel Station Bridge over the Southern Pacific Railroad tracks in the San Fernando Valley, December 13, 1935 

View of a wooden viaduct over a railroad yard in Los Angeles, [s.d.] 

Concrete viaduct crossing a street and railroad tracks, [s.d.] 

Birdseye view of a construction project near railroad tracks in Los Angeles, [s.d.] 

Macy Street grade separation, looking west, 1930-1939 

View of railroad tracks in Hermesillo, Sonora, Mexico, [s.d.] 

Pacific Electric grade separation over Mission Road, [s.d.] 

Macy Street grade separation, looking west, August 1937 

New Marengo Street Bridge over Pacific Electric Railway tracks, February 1936 

Aerial view of flooded area near railroad tracks, Colton, 1938 

Aerial view of flood in Azusa, showing damage of San Gabriel Railroad Bridge over a river, California, 1938