Washington Oversize Permit Cost: Worked Examples

Two trucks carrying the identical overweight load on the same day pay different Washington permit fees if their routes are different lengths. One clause of RCW 46.44.0941 explains it: an overweight single trip permit is priced on "Excess weight over legal capacity, as provided in RCW 46.44.041. Cost per mile." Rate times miles, with a statutory floor underneath. Every other overlegal load pays one flat fee and distance never touches it. Every current figure renders with its official source on the Washington oversize and overweight permits page; this guide walks four moves through that split. To check whether your load is oversize anywhere on the route in the first place, run it through the oversize permit cost estimator.

The two fees, and only one of them counts miles

• Dimension only: $10.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026 buys a single trip permit for any overlegal load except an overweight one. The WSDOT single trip permit is route specific, good for three days, and issued for nondivisible loads only.
• Overweight: no flat price exists. The fee is the cost per mile for the bracket the load's pounds of excess weight fall into, multiplied by the permitted miles.
• The floor and the reprint: $14.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026 is the minimum for any overweight permit whose arithmetic comes out lower, and a duplicate permit costs $14.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026.
• Where you buy it: self-issue through the permit program at esnoopipro.com around the clock, order through a private permit agent, or visit a WSDOT permit office. Permits are not sold at the Ports of Entry, and the district counters take cash or check only.

The bracket table climbs in twenty steps. It opens at

$0.07RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

a mile for the first 9,999 pounds of excess weight.

At the top the statute prices 100,000 pounds of excess at

$4.25RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

a mile and adds fifty cents for every further 5,000 pound increment or part of one.

Two consequences follow from that shape. A short overweight move usually lands on the floor, because the arithmetic has too few miles to clear it. A long one has no ceiling short of the route itself. That is the opposite of Oklahoma, Michigan and Georgia, where the trip permit is priced without anyone asking how far the truck is going; the oversize permit costs by state table sets the models side by side.

Worked example 1: twelve feet wide at legal weight

A drill rig twelve feet wide, inside legal height, length and weight, is a one-line permit:

$10.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

and nothing else. The legal width it crossed is 8 feet 6 inches under RCW 46.44.010, which allows an externally mounted rear vision mirror past the line and lets rule-designated safety, aerodynamic or energy conservation devices stand up to 3 inches beyond the body width.

What the fee does not price is the day. Twelve feet is past the escort line: WAC 468-38-100 puts two pilot escort vehicles on a load over 11 feet wide on two-lane highways, one in front and one at the rear. Washington certifies those operators, and the card is not a formality. It takes an eight hour initial course from a WSDOT-approved provider, a written test passed at 80 percent or better, and renewal every three years, and it has to be carried while working. The escort vehicle is regulated down to its sign, which is at least five feet wide and 10 inches high, black lettering at least eight inches high on yellow, mounted over the roof and displayed only while escorting.

Then there is the clock. Commuter curfews bite at widths as narrow as 9 feet on the Seattle to Everett corridor and on I-5 between SR 599 and SR 523, and at 10 feet across most of the rest of the Puget Sound network, Monday through Friday. Overdimensional loads are barred outright on New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, the day after Thanksgiving and Christmas Day, and from noon on the day before each of them, under WAC 468-38-175. The permit is cheap. The calendar is not.

Worked example 2: one load, two routes

A press frame permitted at 12,000 pounds of excess weight over the legal capacity of its own axle group is the clearest illustration of the meter. Nothing about the load changes between the two moves below. Only the mileage does.

That excess sits in the bracket the fee schedule prices at

$0.14RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

a mile, and the permit bill is that rate multiplied by the permitted miles.

On a forty mile move the arithmetic produces five dollars and sixty cents, which is under the floor, so the permit is written at

$14.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

instead. On a three hundred mile move the same load, the same bracket and the same truck produce forty-two dollars. The load did not get heavier. The route got longer, and in Washington the route is a fee input.

That floor is worth planning around. A permit in the opening bracket does not clear it until the route passes two hundred miles, so any move in that bracket shorter than that pays exactly the minimum. The savings live on the long haul, and on the long haul they come from the axle group rather than from the odometer.

Worked example 3: the same gross weight, two different bills

Washington does not measure excess weight against a flat 80,000 pounds. RCW 46.44.041 gives each axle group its own legal capacity, decided by three overlapping criteria with the lesser governing: tire size, axle weight, and the wheelbase table. No single axle may carry more than 20,000 pounds. The table allows 80,000 pounds on five axles at 51 feet, and it runs to 105,500 pounds for a long group with many axles. Excess weight is the gap between the gross and whichever figure the configuration actually earns.

Take a load grossing 98,000 pounds on that five axle, 51 foot spacing. Its legal capacity is 80,000 pounds, so its excess is 18,000 pounds.

Excess of 18,000 pounds prices at

$0.21RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

a mile, so a three hundred mile permitted route costs sixty-three dollars in permit fees.

Now stretch the same 98,000 pounds over a longer group. As the wheelbase grows the table figure climbs toward 105,500 pounds, the excess shrinks, and at the point where the table figure covers the gross the load stops being overweight at all. If it is still overlegal on a dimension it pays

$10.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

and no mileage. If it is legal on every dimension it needs no permit. The single axle and tandem allowances still govern inside the group, and tire loading is still capped at 600 pounds per inch of tire width, so this is an engineering decision before it is a pricing one. It is also the single biggest lever a Washington heavy haul quote has.

Worked example 4: the repeat hauler

Washington does not sell the blanket annual envelope permit Texas and Oklahoma do. It sells a menu of continuous operation permits, each written for a configuration or a commodity, and almost every one of them buys dimension rather than weight. A carrier running a standing overwidth or overheight lane buys the nondivisible dimensional permit at

$20.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

for 30 days, covering up to 14 feet wide, 15 feet high and 125 feet long depending on the combination. Dimensional continuous permits may be issued for consecutive months up to a year.

The trailer length permits work the same way, and they buy the space just past the legal lines. RCW 46.44.030 caps the semitrailer of a tractor semitrailer at 53 feet and the combined trailer length of a tractor and two trailers at 61 feet. A single trailing unit over 53 feet and not more than 56 feet costs

$100.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

a year, and two trailing units together over 61 feet and not more than 68 feet cost

$100.00RCW 46.44.0941, the Washington special permit fee schedule including the overweight cost per mile table (Washington State Legislature)Verified Aug 9, 2026

a year. Both allow divisible loads, which is the unusual part, because most Washington oversize permitting is nondivisible only.

What none of them buys is general overweight relief. The per mile fee survives every continuous permit on the list, so a carrier hauling heavy every week is quoting mileage every week. The exceptions are narrow and named: raw liquid milk on double trailers has its own permit, and overweight freight on three designated corridors moves under the heavy haul industrial corridor permit at

$1,000.00RCW 46.44.0915, the heavy haul industrial corridor weight ceilings and permit fees (Washington State Legislature)Verified Aug 9, 2026

a year, on SR 509 near the Port of Tacoma, on US 97 from the Canadian border to the Oroville railhead with a ceiling of 139,994 pounds, and on SR 128 and SR 193 from the Idaho border to the Port of Wilma with a ceiling of 129,000 pounds.

Superloads, and the lead time that sets the schedule

A Washington superload is any nondivisible load over 200,000 pounds, or over 16 feet high, or over 16 feet wide, or with a trailing unit plus load over 125 feet long, under WAC 468-38-405. None of them can be self-issued. The weight case needs a written application at least 30 calendar days before the move; the three dimensional cases need at least 7. That gap is the real schedule risk on a Washington heavy haul, because the same job can be a superload on width with a week of notice and a superload on weight needing a month.

The application is a package rather than a form: documentation that the move is in the public interest and that barge or rail is not feasible, a schematic or photograph showing why the item cannot be broken down, axle loadings and spacings with tire sizes and tires per axle, the proposed route, evidence that every county and city on it will permit the move, and a traffic control plan covering delays, lane restrictions, escorts, overhead obstacles and railroad crossings. WSDOT may ask the applicant to share the cost of the analysis, and gives an estimate first so the applicant can decide whether to proceed. If a pavement or a structure on the route is inadequate the application is denied, and the route or the configuration has to change.

What the fee schedule never prices

The permit reaches state highways and nothing else. A WSDOT permit authorises no movement on a county road or a city street; those need the approval of whichever jurisdiction maintains them, which is the line an out-of-state carrier tends to meet at the delivery address rather than at the quote. Insurance is affirmed by signature rather than filed in advance: signing the permit affirms at least $750,000 of liability coverage on a commercial move, or at least $300,000 on a noncommercial one, and that sits separately from the operating authority insurance the Utilities and Transportation Commission requires.

Night movement is allowed as of right only inside a defined envelope of 12 feet wide, 14 feet 6 inches high and 105 feet long including legal overhangs. Anything larger needs the permit itself to say nighttime movement is approved. No move may be made when visibility drops below 500 feet, or when the road is hazardous with snow, ice, mudslide, wind or flooding; Washington publishes no numeric wind speed limit, which leaves that call with the driver. Movement is also prohibited wherever traction advisory or chain requirement signs are displayed, which in this state is a routine winter condition rather than an edge case.

Reading the schedule like a quote

Ask three questions in order. Which dimensions are over, and does any of them cross 11 feet wide or 14 feet 6 inches high into escort territory? What legal capacity does RCW 46.44.041 give this exact axle group, and what is the gap between that figure and the gross? And how many permitted miles is the route? The first answer sets the flat fee and the crew. The second picks the bracket. The third multiplies it. Nothing about a Washington overweight quote is portable between two routes, which is why a flat number copied from another state is wrong here in both directions. See the rest of the state's credential stack at Washington trucking permits.

FAQ

How much does a Washington oversize permit cost?

A single trip permit for an overlegal load that is not overweight is a flat statutory fee, whatever the distance. An overweight permit has no flat price at all: it is a cost per mile for the bracket the load's excess weight falls into, multiplied by the permitted miles, with a statutory minimum underneath. The current figures render with their sources on the state permits page.

Why do two identical Washington loads pay different permit fees?

Because the overweight fee is a bracket rate multiplied by mileage. The same load on a forty mile move and on a three hundred mile move produces two different bills, and the short one usually lands on the statutory minimum instead of on the arithmetic.

What is Washington's excess weight measured against?

Not a flat 80,000 pounds. RCW 46.44.041 gives each axle group its own legal capacity from the wheelbase table, and the table runs as high as 105,500 pounds, so the same gross weight can be deeply overweight on one configuration and legal on another.

What is Washington's superload threshold?

Any nondivisible load over 200,000 pounds, over 16 feet high, over 16 feet wide, or with a trailing unit plus load over 125 feet long. The weight case needs at least 30 calendar days of lead time and the dimensional cases at least 7, and none of them can be self-issued.