"The Twins over Marble Canyon"

http://uwepetercom.blogspot.com/2008/06/the-twins-over-marble-canyon-navajo.html
Navajo Bridge | Page | Arizona | USA | 2008-06-22
Navajo Bridge crosses the Colorado River's Marble Canyon near Lee's Ferry in the U.S. state of Arizona. There are 2 bridges: The old one with 834 feet (254 m) in length, with a maximum height of 467 feet (142 m) from the canyon floor. The new steel arch bridge was completed in September 1995 and is 909 feet (277m) in length.