Oklahoma Truck Weight Limits
On the Interstate you are held to 80,000 pounds (47 O.S. 14-109). Off the Interstate a properly spaced six-axle rig can gross up to 90,000 on Oklahoma state highways under the axle-spacing table. Overweight is a misdemeanor with graduated fines that run from a few hundred dollars into the thousands, and court costs can nearly double what you pay. Overload on a turnpike and they can tack on 10 cents a pound.
Some figures on this page are flagged medium confidence. The weight limits are solid, but a specific fine or permit ceiling should be confirmed with the state DOT before you rely on it.
How much a truck can weigh in Oklahoma
On the Interstate you are held to 80,000 pounds (47 O.S. 14-109). Off the Interstate a properly spaced six-axle rig can gross up to 90,000 on Oklahoma state highways under the axle-spacing table. Overweight is a misdemeanor with graduated fines that run from a few hundred dollars into the thousands, and court costs can nearly double what you pay. Overload on a turnpike and they can tack on 10 cents a pound.
Axles, off-Interstate, and permits
- Off the Interstate: Up to 90,000 lb (six-axle combination under the axle-spacing table)
- Single axle: 20,000 lb
- Tandem axle: 34,000 lb
- With a permit: Up to 90,000 lb on non-Interstate state highways for a properly spaced six-axle combination under the 47 O.S. 14-109 spacing table. Heavier loads by oversize/overweight permit only.
- Single axle 20,000 and tandem 34,000 hold statewide. Turnpike Authority can add its own per-pound charge on top of Highway Patrol fines. Fine-range figures come from statute-based aggregators; verify the current schedule with DPS.
Posted bridge and road limits
Oklahoma posts load-limited bridges and roads on MUTCD R12 signs. WEIGHT LIMIT X TONS is short tons (2,000 lb), so 10 TONS means 20,000 lb. A posted limit overrides the legal max: a legal 80,000-lb rig cannot cross a bridge posted below its weight and must detour. Crossing a posted structure over the limit is its own violation, separate from a highway-overweight ticket, and you can be held liable for damage to the bridge.
What running heavy costs
A weight violation is a misdemeanor: $5 to $500 (47 O.S. 17-101), and certain size and weight violations up to $1,000 (47 O.S. 172). Oklahoma's code does not set the graduated per-pound schedule some vendor guides quote.
Oklahoma Truck Weight Limit FAQ
What is the truck weight limit in Oklahoma?
How much can a truck weigh with a permit in Oklahoma?
What is the overweight fine in Oklahoma?
Reference information for planning, not legal advice. Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it. Last reviewed July 2026. Source: https://law.justia.com/codes/oklahoma/title-47/section-47-14-109/. See our Terms & Disclaimer.
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