Utah Code § 72-5-118: Unlawful road closures.

(1) Except as provided in Sections 72-1-212, 72-5-105, 72-6-114, and 72-7-103, an individual who knowingly places or authorizes the placement of a temporary or permanent barricade on a class A, B, C, or D road, an R.S. 2477 right-of-way, or a portion of a class A, B, C, or D road or R.S. 2477 right-of-way to permanently or temporarily close the road or R.S. 2477 right-of-way to vehicular traffic is guilty of a class C misdemeanor.

(2) This section does not apply to a road closure:

(a) by firefighters or peace officers responding to an emergency;

(b) that may result from a permanent or temporary closure of a public or private railroad crossing; or

(c) on an R.S. 2477 right-of-way across private land if a perpetual public right-of-way has not been granted through a settlement or court order.