US-89 through Logan Canyon, the route the park lists first
Over 12 ft wide is prohibited. Over 10 ft wide or 80 ft long needs a certified pilot car.
State Route 89 (Logan Canyon) between RP 461 and RP 498 (Bear Lake). (a) Vehicles/loads exceeding 10' in width or 80' in length require one certified pilot/escort vehicle. (b) Vehicles/loads exceeding 12' in width are prohibited.https://connect.udot.utah.gov/wp-content/uploads/2026/04/Secondary-Highways-with-Additional-Restrictions-Sept-2025.pdf







