California 134 (Ventura Freeway) uses a massive concrete arch bridge to cross the Arroyo Seco. This bridge, built in 1953 and expanded in 1971, emulates the design of the nearby Historic U.S. 66 (Colorado Boulevard) bridge. The original 1953 bridge was built as a bypass of the Colorado Street Pioneer Bridge and was part of the Colorado Freeway. When the Ventura Freeway was extended east, it took over much of the original Colorado Freeway. Photo taken 121005.