, the metropolitan area of Phoenix contains one of the nation's largest and fastest growing freeway systems, consisting of over . The freeway system is a mix of Interstate, U.S., and state highways which include Interstate 10, Interstate 17, US 60, Loop 101, Loop 202, SR 51, SR 143, and Loop 303. There are still major additions to routes 101, 202 and 303 underway, as well as several other smaller projects around the valley. State Routes 87, 85, and 74 connect Phoenix with other areas of the Valley and Arizona.
, the metropolitan area of Phoenix contains one of the nation's largest and fastest growing freeway systems, consisting of over . The freeway system is a mix of Interstate, U.S., and state highways which include Interstate 10, Interstate 17, US 60, Loop 101, Loop 202, SR 51, SR 143, and Loop 303. There are still major additions to routes 101, 202 and 303 underway, as well as several other smaller projects around the valley. State Routes 87, 85, and 74 connect Phoenix with other areas of the Valley and Arizona.