Cahuenga Pass during rush hour, heading into the city from the San Fernando Valley, 1948

1949, Barham Bridge over Cahuenga Pass, looking southeast, with a stairway leading down to the Pacific Red Car tracks in the center median. 

1948, View of Cahuenga Pass during rush hour, showing a line of cars bumper to bumper heading into the city from the San Fernando Valley, with Pacific Red Car tracks on the left.  Thank you to Jack Feldman and to the Water & Power Museum.