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Navajo Bridge spans the width of Marble Canyon along the Colorado River. Constructed of concrete and steel, the bridge is tied for ninth highest in the United States. Ralf Hoffman of the Arizona Highway Department (AHD) designed it, and in June of…

Intermountain Histories

Intermountain Histories is a free website and mobile app that curates the histories of sites and events around the Intermountain West regions of Idaho, Wyoming, Montana, Nevada, Utah, Colorado, Arizona, and New Mexico. Discover the histories of the region’s peoples, places, institutions, events, cultures, and more. Using an interactive GPS-enabled map, you can take virtual or physical walking tours of historic sites. As your personal tour guide, Intermountain Histories provides historical information, photographs and images, documentary videos, audio interviews, oral histories, bibliographic citations, and other resources as you explore. Read more About Us