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

Southward view of San Fernando Road at Tunnel Station Bridge after the construction of Foothill Boulevard, November 23, 1934 

Southward view of San Fernando Road at Tunnel Station Bridge before the construction of Foothill Boulevard, October 17, 1933 

Northward view of San Fernando Road and Tunnel Station Bridge after the completion of Foothill Boulevard, ca.1934 

View of the deck of the widened Tunnel Station Bridge in the San Fernando Valley, December 13, 1935 

San Fernando Road north across a bridge at Tunnel Station, [s.d.] 

Aerial view of flooded area of Verdugo Wash, showing damaged bridge, Glendale, 1938 

View of a wooden bridge next to a concrete bridge in Los Angeles, [s.d.] 

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

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

View of construction workers adjusting boards on a concrete bridge, [s.d.] 

Hyperion Bridge in the San Fernando Valley looking toward Glendale, January 20, 1931 

Cars near the Hyperion Bridge in the San Fernando Valley looking toward Glendale, January 20, 1931 

View from Riverside Drive of a bridge on the Pasadena Freeway, [s.d.] 

Flooded Vineland Avenue at Middle Tujunga in the San Fernando Valley, February 1927 

Automobiles crossing a bridge over a ravine in Los Angeles, 1930-1949 

Aerial view of Hyperion Viaduct over Riverside Drive and the Hyperion Bridge over flooding Los Angeles River, 1938 

Panoramic view of a wooden bridge over an irrigation canal in the Imperial Valley, [s.d.] 

Homes on a lot in the San Fernando Valley, ca.1935 

Small wooden suspension bridge over construction area, [s.d.]