There are 3,658.04 miles (5,887.04 km)[Note 1] of state routes in Utah.

The code also defines the Utah maintained portions of Interstate and U.S.

With the exception of state route numbers assigned to match U.S.

The longest highway of any type in Utah is U.S. Route 89 at 502.577 miles (808.819 km).

The shortest signed route is State Route 103 at 0.225 miles (0.362 km) long, connecting Hill Air Force Base to I-15 and SR-126.