Interstates: Interstate nn (I-nn) State: State Route nn (SR-nn) | US Highways: US Highway nn (US-nn) | |
In the U.S. state of Utah, some state highways have been specifically designated to serve state parks and state institutions. The range of numbers from State Route 281 to State Route 320 has been used for this purpose since 1969.
References
List of state highways serving Utah state parks and institutions Wikipedia(Text) CC BY-SA