Oversized Load Regulations by State
Legal dimension limits
In most states, loads are legal up to 8'6" wide, 13'6"–14' tall, and 48'–53' long depending on trailer type. Anything beyond these dimensions requires an oversize permit for each state the load travels through.
Weight limits & axle spacing
Federal law caps Interstate loads at 80,000 lbs gross, 20,000 lbs on a single axle, and 34,000 lbs on a tandem, with the bridge formula governing spacing in between. Anything heavier needs an overweight permit — and most states ask for an axle-spacing diagram with the application.
Frequently asked questions
Do I need a separate permit for every state?
Yes — oversize permits are issued state by state. A California-to-Texas move needs CA, AZ, NM, and TX permits. We file all of them in a single order.
How long is a single-trip permit valid?
Most states issue 3–10 day windows tied to a set route and dates. If your schedule slips, we amend or refile before you roll.
What happens if I run oversize without a permit?
Fines, an out-of-service order, and liability for any road or structure damage — and repeat violations follow your carrier record.
We'll confirm exactly what your load needs — permits in 24–48 hours.