Washington County, UT Filming & Production: Street Closures (2026)

Section 3-3-3(A)(1) singles out SR-18 for special treatment: because of vehicle and active-transportation traffic between mile marker ten and mile marker thirty-nine, any special event on that stretch, including a filming event, is automatically a major event once it draws 75 or more attendees. Events with fewer than 200 participants must use the paved county trail rather than the roadway, sharing the trail with the public, specifically to keep small productions off SR-18. Events with 200 or more participants may use the roadway itself only if the county does not determine that the trail is in the county's best interest, and the county alone decides whether the trail should be closed to the public during filming; the applicant or organizer is responsible for supplying all needed road, trail, or other signage.

Section 3-3-5(C)(17) requires the application to include a complete map of all traffic controls and full or partial road closures, and states plainly that impairment of the roadway, including lead vehicles, escort or sweeper vehicles, or barricades, is prohibited except for three named signature events (Ironman, St. George Marathon, and Snow Canyon Half Marathon). Beyond SR-18, section 3-3-3(B) requires any filming production wanting a full or partial road closure anywhere in the unincorporated county to obtain a separate encroachment permit, and states that no exceptions to the permit chapter apply once a closure is requested.