The purpose of this record is to supply data to the National Resource Analysis Center (NRAC) of the Office of Emergency Preparedness (OEP) to permit an early assessment of damage to a network of highways resulting from a nuclear attack on the United States.

Arizona was once just a passage for pioneers headed west for gold, religious freedom, and cheap land. Native Americans had lived in and explored the territory for years, but it was Manifest Destiny and the western expansionist philosophy of the burgeoning US government that created the impetus for better and faster routes across the vast territory with its topographical challenges. In the 1880s, the railroads first booted their way across the landscape, following historic trails before the highways were built. The Grand Canyon and Colorado River were obvious challenges, but there were also seasonal waterways that needed crossings. The history of the state unfolds with this book, profiling the bridges that define these historic transportation routes. Many of them have been proudly restored by their communities or the state, while others are gone or are in a sad state of decline.--Amazon.com.