Legal size limits without a permit
| Measurement | Oregon legal limit |
|---|---|
| Height | 14 ft 0 in |
| Width | 8 ft 6 in |
| Front Overhang | 4 ft 0 in |
| Rear Overhang | 3/4 of wheelbase (solo) or 5 ft off trailer (combination) |
Axle and gross weights
How much each axle group and the whole vehicle can carry in Oregon, 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 (or 600 lbs/inch of tire width, whichever is less) | 21,500 lbs |
| Tandem axle | 34,000 lbs (or 600 lbs/inch of tire width, whichever is less) | 43,000 lbs |
| Tridem axle | Confirmed at filing | Confirmed at filing |
| Quad axle | Confirmed at filing | Confirmed at filing |
| Gross weight | 80,000 lbs | Up to 105,500 lbs (extended weight, divisible loads) / 98,000 lbs annual heavy-haul cap for non-divisible loads |
Superload: Loads over 16 ft wide (Interstate/multi-lane) or 14 ft wide (2-lane), over 17 ft high, or over 150 ft long are classified superloads
Permit types we file in Oregon
Single-Trip PermitCovers one specific over-dimension or overweight movement.
Annual PermitCovers repeat movements, including Extended Weight, Long Logs/Poles/Piling, and Mobile/Modular Unit permits.
Special-Use / Superload PermitFor non-divisible loads exceeding standard permit dimension/weight ceilings.
Maximum dimensions with a permit
| Dimension | Maximum with a permit |
|---|---|
| Length | Up to 120 ft (long logs/poles/piling annual permit) / 90 ft typical non-divisible single-trip |
| Width | Up to 14-16 ft before superload route survey is triggered |
| Height | Up to 14 ft 6 in standard; loads to 17 ft before superload classification |
| Rear Overhang | Varies by combination; up to 5 ft off trailer under standard permit |
Loads exceeding roughly 16 ft wide, 17 ft high, or 150 ft long move into ODOT's Superload category, requiring a route survey.
Escorts and travel restrictions
Escort & pilot car rules
- Pilot vehicles are required based on width, height, length, or overhang per ODOT's Route Map/Attachment system.
- Loads over 14 ft 6 in high require either a front pilot vehicle with a height pole or a signed carrier declaration.
- Oregon-certified flaggers are required at many locations for overwidth/overheight moves.
When you can travel
- Many oversize load categories are restricted to daylight hours.
- Movement is banned around major holidays.
- Long logs over 105 ft face additional weekend restrictions between Memorial Day and Labor Day.
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.
Oregon specifics
- Banner size, flag size and light rules for Oregon 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 ODOT and can change. We confirm the current rules for your exact load before filing.