
1) Road bridge in Arizona
Found on
https://www.crosswordclues.com/clue/navajo-bridge

Prior to the construction of the first Navajo Bridge, the only river crossing from Arizona to Utah was at nearby Lee`s Ferry, where the canyon walls are low and getting vehicles onto the water is relatively convenient. The ferry offered only unreliable service, however, as adverse weather and flooding regularly prevented its operation. ==History=....
Found on
http://en.wikipedia.org/wiki/Navajo_Bridge
No exact match found.