High Quality Content by WIKIPEDIA articles! In the U.S. state of Utah, U.S. Route 89 (US-89) is a long north–south state highway spanning more than 502 miles (807.891 km) through the central part of the state. Between Provo and Brigham City, US-89 serves as a local road, paralleling Interstate 15, but the portions from Arizona north to Provo and Brigham City northeast to Wyoming serve separate corridors. The former provides access to several national parks and Arizona, and the latter connects I-15 with Logan, the state`s only Metropolitan Statistical Area not on the Interstate.