Legal size & loaded measurements
General width
8′6″Ordinary vehicle-and-load limit; safety-device, vehicle and load exceptions may apply.
Loaded height
14′Ordinary vehicle-and-load limit; listed exceptions and actual route clearances apply.
Loaded dimensions
Washington baselines are 8 feet 6 inches width and 14 feet height; single-unit, trailer, doubles, logging and specialized combinations have distinct length/overhang rules.
Axles, weight & bridges
Use tire factors, axle/group weights, spacing, weight table, bridge formula, registration and route postings; GVW alone is not a Washington answer.
Permits, routes & larger loads
Roads & authorities
WSDOT permits cover state routes; city and county roads require the maintaining jurisdiction's approval and must be included in the state route when applicable.
When a permit is needed
Overlegal eligible loads need the WSDOT permit product before entering or moving in Washington; product duration ranges from route-specific single trip to 30-day/annual programs.
Larger-load review
Routine products publish variable-size, manufactured-home and trailer bands. Superload review starts over 200,000 pounds, over 16 feet high, at least 16 feet wide or over 125 feet trailer/load length.
State permit fees
Single-trip agency fee example
$10 for this Washington planning example: a nondivisible load measuring 8′7″ wide, 13′ high and 70′ overall, at 72,000 lb gross on a five-axle rig with a 48′ trailer. The example uses 100 in-state miles. Change the load details in the calculator for your move.
What the agency estimate includes
The calculator applies Washington's maintained single-trip permit schedule to the loaded vehicle and the supplied fee inputs. It itemizes the supported state charges, including weight or distance charges where applicable. Annual permits, special products, local permissions and payment-method charges need their own applicable schedule.
WA / Permit worksheet
Price your Washington movement.
Enter the complete loaded vehicle. Get estimated agency fees and escort requirements before sharing your contact details.
The numbers behind your next move.
Your result will show the agency fee breakdown, potential pilot-car requirements, and the rules used to calculate them.
- 01 State agency fee subtotal
- 02 Escort & survey considerations
- 03 Sources & pricing assumptions
Single-state pricing uses the mileage you enter. For a proposed route and intermediate states, use the route calculator.
About the example equipment
The samples use ODPermit’s editable 48 ft flatbed · 5 axles planning profile. Loaded dimensions, gross weight, 100 state miles and Texas registration are example inputs, not a capacity rating or a route approval. Replace them with your actual setup.
Great Dane Freedom trailer specifications — 48 ft platform; the illustrated 40 in drop deck and 20 in drop support a 60 in upper-deck planning height. Combined tare and tractor geometry are editable ODPermit assumptions.
Pilot cars, height poles & surveys
14′6″-wide load example
Example: 14′6″ wide × 13′ high, 75′ overall, 72,000 lb gross, zero overhang or rear projection, ordinary nondivisible freight in daylight. Depending on the road or permit conditions: On two-lane roads, a front projection over 20 ft measured from the front steer axle requires a front escort. A rear projection measured from the rear axle exceeding one-third of trailer-and-load length requires a rear escort. These axle-based distances differ from projection beyond the vehicle. On any road, a rear escort is required if mirrors do not provide a 200-ft rear view along both sides. Existing positions may satisfy these conditions. Two-lane roads: 1 front and 1 rear pilot cars. Multi-lane undivided roads: 1 rear pilot car. Divided highways: 1 rear pilot car.
17′6″-high load example
Example: 9′ wide × 17′6″ high, 75′ overall, 72,000 lb gross, zero overhang or rear projection, ordinary nondivisible freight in daylight. Depending on the road or permit conditions: On two-lane roads, a front projection over 20 ft measured from the front steer axle requires a front escort. A rear projection measured from the rear axle exceeding one-third of trailer-and-load length requires a rear escort. These axle-based distances differ from projection beyond the vehicle. On any road, a rear escort is required if mirrors do not provide a 200-ft rear view along both sides. Existing positions may satisfy these conditions. All road types: 1 front (height pole required) pilot car.
Travel hours & road restrictions
Travel hours
Night movement is limited to the 12-foot/14-foot-6-inch/105-foot envelope unless department-approved permit notation authorizes more; curfews and route conditions control.
Current route restrictions
Check holiday curfews, commuter restrictions, mountain-pass and traction signs, construction, weather and local road postings before departure.
Signs, flags & safety equipment
Safety equipment
Use required 7-foot signs, projecting-load lighting, escort lights/signs, securement, winter controls and every traffic-control condition shown on the permit.
What the driver needs
Carry the permit
Carry a readable printed or e-signed permit copy; trip/fuel permits require a printed signed copy, and local/route attachments remain binding.
Prepare the driver packet
The packet must match the vehicle/load, permit product, route, dates, dimensions, axle/tire data, local approvals, traffic-control plan and special-program attachments.
Special equipment & permit programs
Special permit programs
Heavy-haul sealed containers, manufactured/mobile homes, logging, farm implements, tow trucks, milk doubles and emergency programs have scoped routes, dimensions and fees.
BEFORE THE TRUCK ROLLS
Turn the estimate
into a permitted move.
Confirm the loaded measurements, carrier details, travel dates and exact pickup and delivery. We can help coordinate permits, escorts and route surveys around those facts.
THE SOURCE RECORD
Official references.
Read the rule behind each requirement. These are dated references; current restrictions and the issued permit control your move.
- 01Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Legal Dimensions · Page 4
Source record: - 02Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Legal Weights · Page 4
Source record: - 03
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- 05
- 06
- 07
- 08
- 09RCW 46.44.0941 — overweight mileage fees and whole-dollar rounding
RCW 46.44.0941 — overweight mileage fees and whole-dollar rounding
Source record: - 10
- 11Washington WAC 468-38-100 — pilot/escort requirements
Washington WAC 468-38-100 — pilot/escort requirements
Source record: - 12Washington WAC 468-38-100 — pilot/escort requirements
Washington WAC 468-38-100 — pilot/escort requirements
Source record: - 13Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Curfew and Nighttime Movements · Page 4
Source record: - 14Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Winter Road Restrictions · Page 4
Source record: - 15Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Oversize Load Signs · Page 4
Source record: - 16Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Permit Regulations · Page 4
Source record: - 17Washington State Commercial Vehicle Guide M 30-39.10
Chapter 4, Permit Regulations · Page 4
Source record: - 18