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:
8 ½ feet
Single Truck 40 feet
Truck and Trailer 75 feet
Trailer 53 feet.
Single axle: 20,000 lbs
Tandem axle: 34,000 lbs
Tire size: 500 lbs maximum per inch width
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 7331