Why These Permits Are Required
Construction equipment like bulldozers, cranes, and excavators often exceed standard vehicle dimensions or weight limits. Moving these loads without the proper permit can result in:
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Fines and penalties
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Road or bridge damage liability
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Out-of-service orders during inspections
Heavy haul permits ensure carriers follow approved routes, time restrictions, and safety regulations while transporting large equipment.
Types of Permits
WSDOT issues different types of permits depending on load characteristics, apply at https://www.washingtontruckingonline.com/
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Oversize Permits – For loads exceeding width, height, or length limits.
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Overweight Permits – For vehicles or combinations exceeding standard axle or gross weight limits.
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Superload Permits – For extreme loads that require advanced planning and escort vehicles.
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Single Trip vs Annual Permits – Single-trip permits for one-time moves, annual permits for frequent or recurring heavy haul operations.
Key Requirements
Carriers moving construction equipment must typically:
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Obtain a USDOT number if operating interstate
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Provide vehicle and load details (weight, dimensions, type of equipment)
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Select the correct permit type and pay associated fees
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Follow approved routes and time-of-day restrictions
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Use escort/pilot vehicles if required
Special Considerations
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Some local jurisdictions may require additional permits.
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Oversize/overweight loads may be restricted during holidays, nighttime hours, or adverse weather.
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Proper signage, flags, and lighting are mandatory to ensure road safety.
Key Takeaway
If you are transporting construction equipment or heavy haul loads in Washington State, obtaining the correct oversize/overweight permit is essential. Compliance with WSDOT rules avoids fines, protects public infrastructure, and ensures safe transport.