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Island County > Public Works > Roads > Road Permits > oversizeandoverweightpermits

Oversize and Overweight Permits

Moving that new home to your land over Island County roads?

Anyone hauling a load or driving a vehicle in excess of the legal weight or size limitations is required to have a permit before moving on Island County roads (and a State permit for state roads).

In general, the Maximum Legal Dimensions:

Width:

 8 ½ feet

Height:

14 feet

Length:

 Single Truck 40 feet

Truck and Trailer 75 feet

Trailer 53 feet.

Weight:

Single axle: 20,000 lbs

Tandem axle: 34,000 lbs

Tire size: 500 lbs maximum per inch width

See RCW  46.44.041 for the Washington State Vehicle Table

There are also exceptions and additional requirements for oversize loads depending on the load, size of the load, total truck/trailer length and the route. See  RCW 46.44 and WAC 468-38 for detailed information.

For Island County Permits:

Call Public Works: (360) 679-7960

Or email: c.herrera@co.island.wa.us​

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