Before the first Navajo Bridge was built in 1929, the only way across the Colorado River for hundreds of miles was a dangerous ferry ride. The original bridge (on the right) was too narrow and had a dangerous bend at the east end that caused accidents. The new bridge was built in 1994 and the old bridge was turned into a pleasant foot (and equestrian) bridge. The old arch span was 616 feet long and the new arch span is 726 feet long. Both bridges are about 500 feet above the Colorado River. They're located just south of Utah across from the aptly-named Vermillion Cliffs. Arizona's Bridges: Navajo Bridges (4) by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.