Utah Oversize & Overweight Permits

When Utah needs a permit

Utah's legal envelope is 8'6" wide, 14' high, 80,000 lb (Utah Code 72-7-406). A pilot car starts at 12' wide off the Interstate, and Highway Patrol rides along over 17' wide or 17'6" high. Travel is daylight only, with a Wasatch Front rush hold at 6-9 a.m. and 3:30-6 p.m. Utah adds its own no-move day, Pioneer Day on July 24, on top of the federal holidays.

Thresholds, escorts, and curfews

• Legal max before a permit: Permit needed over 8'6" wide, 14' high, 80,000 lb, or past legal length (53' trailer on designated highways). Under all of those, no permit.
• Escort / pilot car: Non-Interstate: one pilot car over 12' wide, two over 14', three over 16'; one escort past 105' long. Interstate: one over 14', two over 16'; one escort past 120'. A height pole car over 16' high. Highway Patrol required over 17' wide or 17'6" high on secondary roads, over 20' wide or 17'6" high anywhere, and on any load past 175' long.
• Superload: Over about 17' wide or 17'6" high, or a very heavy non-divisible load (a permit tops out near 125,000 lb gross before special engineering, higher by axle count), UDOT runs a route survey and structural review before it issues. Not a same-day permit.
• Travel curfew: Daylight only, a half hour either side of the sun. A narrow load (about 10' wide or less, legal height, up to ~92' long) can run 24/7 with lighting. Wasatch Front counties hold loads during 6-9 a.m. and 3:30-6 p.m. weekday rush. No moves on Pioneer Day (July 24) or major holiday weekends for loads over 10' wide, 14' high, or 105' long.
• Permit fee: Single-trip permits start around $25 (statutory single-trip OS/OW is $60 for up to 96 hours). Annual oversize permits start near $200, and a divisible-load annual can reach about $540. Overweight fees scale with the weight.

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