Marble Canyon bridges over the Colorado River at the Glen Canyon National Recreation Area in northern Arizona

© trekandshoot/Alam

Bridging the gap two ways. Marble Canyon bridges

Today we're taking a trip to a part of northern Arizona cut off from the rest of the state by the Colorado River and its deep canyons. No doubt you've heard of the Grand Canyon, but just a day before, was an important milestone to another canyon about 70 miles away. On September 14, 1995, the twin Marble Canyon bridges, better known collectively as Navajo Bridge, were officially dedicated as the second bridge was installed.

The first, in place since 1929 when it was hailed as a 'modern marvel' and 'the biggest news in Southwest history,' had long been key to travel across the 834-foot gap of Marble Canyon. But as time passed, the area saw heavier vehicles and more traffic. After much debate about the impact on Native land and endangered plants, and the likelihood of debris falling into the river below, plans were developed for the $14.7 million, nearly identical second bridge. Now, Marble Canyon (which the geologically inclined may notice is largely limestone, not marble) has two bridges, each about 470 feet over the Colorado River. The original serves as a path for humans and horses while the new bridge carries vehicles. Both bridges hold the title of ninth highest in the United States (though the newer one is about three feet higher).