Utah Truck Bans & Hazmat Routes

Where Utah keeps trucks out

Utah has no cars-only parkways, but Salt Lake City runs a real restricted-route system. Combinations over 45 ft, loads over 8 ft wide, and anything registered at 36,000 lb or more must stay on designated truck, restricted-vehicle and hazardous-cargo routes unless you hold a permit (SLC Code 12.28.140), and cannot occupy the central traffic district from 11 AM to 6:30 PM. UDOT maps mark the 14 ft 6 in high-load network. No downtown tunnel bans hazmat. Know your loaded height.

Key restrictions

• Salt Lake City restricted-route system (SLC Code 12.28.140): rigs over 45 ft, over 8 ft wide loaded, or registered at 36,000+ lb must use designated truck, restricted-vehicle and hazardous-cargo routes unless permitted
• No restricted vehicle may enter or occupy the Salt Lake City central traffic district between 11 AM and 6:30 PM
• UDOT motor-carrier maps mark the 14 ft 6 in high-load network and the structures with limited clearance
• No downtown tunnel bans hazmat; know your loaded height and obey the posted clearance plate

• Parkway / road ban: No cars-only parkways. Salt Lake City runs designated truck, restricted-vehicle and hazardous-cargo routes by ordinance for larger and heavier rigs.
• Hazmat: No enclosed-tunnel hazmat ban in the Salt Lake metro. Placarded loads use Utah-designated hazmat routes and the Interstates (49 CFR 397). Salt Lake City requires hazardous-cargo movements to stay on its designated hazardous-cargo routes unless a permit says otherwise.
• Through-truck routes: Salt Lake City is the strict one. Restricted vehicles (combinations over 45 ft, loads over 8 ft wide, or anything registered at 36,000 lb or more) must stay on designated truck, restricted-vehicle and hazardous-cargo routes unless permitted (SLC Code 12.28.140), and may not enter or occupy the central traffic district between 11 AM and 6:30 PM. Other cities post local routes. Local deliveries get direct access; through trucks stay on the network.
• Fine: Operating a restricted vehicle off the designated route without a permit is a Salt Lake City municipal violation; amounts vary by court. Hazmat routing violations follow state and federal penalties. Confirm current figures with UDOT and Salt Lake City.

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