High Quality Content by WIKIPEDIA articles! There are 22 state roads that are shorter than 1-mile (1.6 km) long in the U.S. state of New Mexico and are maintained by the New Mexico Department of Transportation. The shortest, State Road 446, is a quarter-mile (402 m) long and serves to connect Valmora to State Road 97. State Road 597, the second shortest highway, links U.S. Route 160 to the Four Corners Monument, a tourist destination in the Navajo Nation where the states of Utah, Arizona, New Mexico, and Colorado meet. In comparison, the longest state road in New Mexico is State Road 120, 119.031 miles (191.562 km) long, which is more than 475 times longer than the shortest state road.