What Is an Oversize Load? Permits, Escorts, and Legal Limits
An oversize load is any load that exceeds a state's legal size or weight limits and therefore needs a special permit to travel. Understanding the thresholds helps you predict whether your machine will need permits — and why that changes the price.
The standard legal limits
Across most of the U.S., a load is legal up to 8'6" wide, 13'6" tall, roughly 48–53 ft long on a standard trailer, and about 80,000 lbs gross. Exceed any one of those and the load becomes oversize (for dimensions) or overweight (for weight), each requiring its own permit.
Permits are state by state
Oversize permits are issued per state, so a cross-country move may need several. Each has its own fees, allowed travel times (many restrict oversize travel to daylight or weekdays), and route rules. This is why the same machine can cost different amounts on different routes.
When you need pilot cars
Wider and taller loads require pilot/escort vehicles — sometimes one, sometimes front and rear, and for extreme loads a police escort. The wider or taller the load, the more escorts the states require, which adds to the cost.
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(208) 495-2260Frequently asked questions
What size is considered an oversize load?
Generally anything wider than 8'6", taller than 13'6", longer than the legal trailer length, or heavier than about 80,000 lbs gross. Exceeding any one threshold makes it oversize or overweight.
Do oversize loads travel at night?
Usually not — most states restrict oversize travel to daylight hours and often prohibit it on weekends and holidays, which can affect transit time.
Who pays for permits and escorts?
They are part of the shipping cost. A heavy-haul carrier arranges permits and escorts and includes them in your quote so there are no surprises.