Flatbed Load Size Limits Overwidth, Overheight, Overlength Load Limits

Flatbed Load Size Limits Width , Length and Height Rules

Overwidth Flatbed Loads

Length, Width and Height Limits on Loads


Load size is regulated both by federal and state laws. While the following size restrictions apply in most situations, there can be some variation.
Maximum Load Width – 8’6″

Maximum Load Height – 13’6″ (some Western states allow 14′ high loads)

Maximum Load Length – The length limit varies depending on whether the load travels on the Federal Interstate system, U S Highways or State highways. In some situations, loads can overhang 4′ off a 48′ trailer. No overhang is allowed on 53′ trailers.
Loads exceeding 53′ can be transported on properly permitted stretch trailers.
The load maximums apply to the load and trailer combined. The height maximum, for example is 13’6″ from the ground including both the trailer and the load.

Loads meeting these length, width and height restrictions are often called legal loads. A load that exceeds these maximums can be legally transported by the purchase of permits. For safety reasons, these permitted loads are subject to various restrictions such as date and time of travel, route designation, marking requirements and possible requirement of pilot cars.
If a load is divisible in such a way as to meet the legal load limits, no permit will be granted.

The information regarding load size (length, width, height, permitting and so forth) is generalized and intended for use as a guide only.. Please check the actual requirements for your load carefully.
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