Legal size limits without a permit
| Measurement | Utah legal limit |
|---|---|
| Height | 14'0" (no permit) |
| Width | 8'6" (no permit) |
| Front Overhang | No universal statutory limit; UDOT specifies 4' for stinger-steered transporter configurations |
| Rear Overhang | No universal statutory limit; UDOT specifies 6' for stinger-steered transporter configurations |
Axle and gross weights
How much each axle group and the whole vehicle can carry in Utah, without a permit and with an overweight permit.
| Axle group | Legal limit | With a permit |
|---|---|---|
| Steer axle | Confirmed at filing | Confirmed at filing |
| Single axle | 20,000 lbs | Increased per UDOT overweight non-divisible load provisions; evaluated case-by-case against bridge formula |
| Tandem axle | 34,000 lbs | Governed by bridge formula analysis per axle spacing |
| Tridem axle | Confirmed at filing | Confirmed at filing |
| Quad axle | Confirmed at filing | Confirmed at filing |
| Gross weight | 80,000 lbs | No flat statewide cap published; permits above 125,000 lbs GVW move to a separate fee tier |
Superload: UDOT's Superload team engages on loads above 125,000 lbs GVW and/or over 18' in height
Permit types we file in Utah
Single Trip PermitOne-time movement permit for a specific oversize/overweight, non-divisible or divisible load and route.
Semi-Annual / Annual PermitVehicle-specific permit allowing repeated oversize/overweight moves for 6 or 12 months.
Superload PermitHandled by UDOT's dedicated Superload team for loads exceeding standard envelopes.
Maximum dimensions with a permit
| Dimension | Maximum with a permit |
|---|---|
| Length | Up to 175' on all public highways before a Utah Highway Patrol escort is mandatory |
| Width | Up to 20' on freeways / 17' on secondary highways before a police escort is mandatory |
| Height | Up to 17'6" before a police escort is mandatory; loads over 18' may require a route survey |
| Rear Overhang | Not separately published; governed by lighting/flagging rules |
Loads exceeding 18' in height may require UDOT's Superload team to complete a route survey before the permit can be issued.
Escorts and travel restrictions
Escort & pilot car rules
- Police escort required for loads over 17' wide on secondary highways or 20' wide on freeways.
- Police escort required for loads over 17'6" high on all public highways.
- Police escort required for loads over 175' long on all public highways.
When you can travel
- Regional route authorization for larger loads should be requested up to 14 days in advance.
- UDOT administrative rules restrict some oversize movement to daylight hours; exact hours are permit-specific.
Signs, flags and lights
Most states require
- An “OVERSIZE LOAD” banner on the front of the truck and the rear of the load.
- Red or fluorescent orange warning flags at each corner and at the widest points of the load.
- Amber warning lights or clearance lights when moving at night, where night travel is allowed.
Utah specifics
- Banner size, flag size and light rules for Utah are listed on your permit.
- We include them in your permit notes so your driver has them before the trip.
Rules change. Limits and requirements are set by UDOT and can change. We confirm the current rules for your exact load before filing.