List of Interstate Highways in Colorado

The Interstate Highways in Colorado are the segments of the national Dwight D. Eisenhower System of Interstate and Defense Highways that are owned and maintained by the state of Colorado, totaling about 956 miles (1,539 km) of interstate highway. Colorado has 3 main highways (two-digit routes), and 2 auxiliary highways (three-digit routes), totaling 5 interstates, all are located within the Denver Metropolitan Area. The longest interstate in Colorado is Interstate 70, which is 449.58 miles (723.53 km) There are also 17 active business routes and 7 former business routes, most of them are from I-70. The last segment of interstate highway to open up to date was Interstate 76, which was between Pecos Street and I-25 northwest of Denver.

List of Interstate Highways in Colorado

The Interstate Highways in Colorado are the segments of the national Dwight D. Eisenhower System of Interstate and Defense Highways that are owned and maintained by the state of Colorado, totaling about 956 miles (1,539 km) of interstate highway. Colorado has 3 main highways (two-digit routes), and 2 auxiliary highways (three-digit routes), totaling 5 interstates, all are located within the Denver Metropolitan Area. The longest interstate in Colorado is Interstate 70, which is 449.58 miles (723.53 km) There are also 17 active business routes and 7 former business routes, most of them are from I-70. The last segment of interstate highway to open up to date was Interstate 76, which was between Pecos Street and I-25 northwest of Denver.