Photograph of a part of the roadway of the new Fourth Street viaduct, 1931. "No.1 -- Part of the roadway of the new 4th Street Viaduct built by Los Angeles city and county and the Union Pacific, Santa Fe and Los Angeles Railway company. The one-half mile viaduct's roadway has width of 56 feet and two sidewalks" -- typed note attached to verso. "Received. Examiner reverence library" -- stamped on verso, dated, "July 31, 1931". "Please credit Union Pacific Photo" -- stamped on verso.; Streetscape. Horizontal photography.