State Police : (360) 596-4000
OD Permits : (360) 704-6340
Road Conditions : Live Map
Registration maximum weight (cab card) : 105500
Operating time :One half hour before sunrise to one-half hour after sunset, including Saturdays and Sundays. In addition, vehicle/loads not exceeding 12' wide, 14' high and 105' long, including legal overhangs, may run at night with proper lighting defined by Federal Regulations 49 CFR 393.11.
Monday through Friday time/width curfew restrictions for the vicinities of Seattle-Everett, Tacoma, Olympia, Vancouver and Kelso are listed on the Commuter Curfew Hours sheet which accompanies permits. A validation number for permission to use city routes in Seattle and Tacoma can be obtained.
Weights : 99,200* (5 axles) 108,000* (6 axles) 134,000* (7 axles) *Depending on axle spacings Steer Axle – 600 pounds per inch of tire width (13,200 pounds maximum with 11 inch tires) Single – 22,000 Tandem – 43,000 Tri Axle – Depends on spacings (4'2" spacings get about 54,080 pounds; 4'6" spacings get about 58,500 pounds, etc.) Register for up to 105,500 pounds to permit for that much or more. Loads exceeding 200,000 pounds are considered as Super Loads.
Size :Width: 16' (14' on 2-lane highways) Height: 16' Length: 125' trailer and load Note on Height Clearances: Washington state oversize permits do not guarantee height clearances on permitted routes. Loads exceeding these dimensions considered as Super Loads.
Escorts :On Multiple Lane Highways: Width: Over 14' – 1 escort; over 16' – case by case basis Height: Over 14'6" – 1 escort with height pole Length: Trailer length including load over 125' – 1 escort Overhang: Center last axle to end of load exceeds 1/3 of total trailer and load length – 1 escort.
On 2-Lane Highways: Width: Over 11' – 2 escorts; over 16' – case by case basis Height: Over 14'6" – 1 escort with height pole Length: Trailer length including load over 105' – 1 escort. Overhang: rear overhang exceeds 1/3 of total trailer and load length – 1 escort.
Signs : "Oversize Load" signs are required for all over-sized loads at the front of the tractor at a height of 5' from ground level (or as high as practicable on the vehicle or load if it can not accommodate the 5' height), and at the rear of the vehicle at a height of 5' to 7' from ground level (or as high as practicable on the vehicle or load if it can not accommodate the 5' to 7' height). Signs are not needed for overweight only loads. Flags must be displayed on all four corners of all over-width loads, and at the extreme ends of all protrusions, projections, or overhangs. When night movement is allowed, loads projecting beyond the sides of the vehicle must have amber lights visible from the front and side at the outermost extremities. Rearmost edge of the projecting load must be marked with a red lamp visible from the rear and side.
General :Permits valid for three days. Must have permit prior to entering the state. Washington permits can no longer be purchased at POEs.All lift axles must be on the ground if exceeding legal axle weights. Overweight single piece loads must be reduced when possible. Loads created by means of welding, bolting, or tying will be considered to be reducible.