Arizona has many bridges and some are on the National Register of Historic Places in Arizona. There are several Suspension Bridges and Covered Bridges. The Mike o"Callaghan-Pat Tillman Memorial Bridge opened in 2010 and links the states of Arizona and Nevada. It is the highest and longest concrete arch span in the western Hemisphere. The original Navajo Bridge is a Historic Civil Engineering landmark. The Salt River Canyon Bridge is red to complement the color of the canyon walls. The original London Bridge in England was shipped stone-by-stone and reconstructed in Lake Havasu City a desert town in northwest Arizona. Tonto Natural Bridge north of Payson is a State Park and is the largest travertine bridge in the world. London Bridge in Arizona
