The Olympic Boulevard Viaduct (1925, 1420’, originally 9th Street Viaduct) The 9th Street Viaduct was re-named in honor of the 1932 Olympics, held in Los Angeles. It was the first span to be completed under Los Angele’s bridge replacement push in mid 20s and is stylistically more organic and delicate than subsequent bridge structures. The ornamental pylons which support the lamp posts protrude past the edges of the deck, giving the bridge a rhythmically patterned silhouette.