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British Columbia vs Washington: oversize rules side by side

A move that crosses from British Columbia into Washington needs two permits and follows the stricter rule wherever they differ. 15 of 22 rules differ, highlighted below.

Updated October 2026 · From FreightDeck's audit of state regulations · Compare any two states

Crossing from British Columbia into Washington? See the permits, escorts and surveys your load needs on the whole route → Free, no signup.

RuleBritish ColumbiaWashington
Legal limits
Legal width8 ft 6 in8 ft 6 in
Legal height13 ft 7 in14 ft
Legal length (combination)75 ft75 ft
Legal gross weight139,991 lbs80,000 lbs
Escorts and surveys
One escort at (width)10 ft 6 in11 ft
Two escorts at (width)12 ft 6 in11 ft
Pole car at (height)—14 ft 6 in
Police escort at (width)——
Route survey at (height)16 ft16 ft
Route survey at (width)19 ft 8 in16 ft
Superload thresholds
Superload width14 ft 5 in16 ft
Superload height16 ft16 ft
Superload length131 ft125 ft
Superload weight187,000 lbs200,000 lbs
Travel windows
Night travelAllowed (conditions)Daylight only
Weekend travelAllowedAllowed
Holiday blackouts11 holidays7 holidays
Overhang
Rear overhang allowed6 ft 7 in15 ft
Front overhang allowed—3 ft
Permits
Routine permit lead time~3 days~3 days
Superload lead time~7 days~30 days
Permit valid for7 days3 days

Highlighted cells differ. "Per permit" means the state sets the rule on the permit rather than publishing a fixed limit. Escort triggers are the width or height above which the requirement applies.

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