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All 10 provinces + US federal limits. Includes spring thaw restrictions. Updated for 2026.
Disclaimer: These are general reference values. Actual limits vary by road classification, axle spacing, tire type, and seasonal restrictions. Always verify with your provincial transportation ministry before loading.
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| Province | Gross | Steer | Single | Tandem | Tridem |
|---|---|---|---|---|---|
| Ontario | 139,991 lbs (63,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 39,683 lbs (18,000 kg) | 46,958 lbs (21,300 kg) |
| Quebec | 137,789 lbs (62,500 kg) | 13,228 lbs (6,000 kg) | 22,046 lbs (10,000 kg) | 39,683 lbs (18,000 kg) | 52,911 lbs (24,000 kg) |
| British Columbia | 139,991 lbs (63,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 52,911 lbs (24,000 kg) |
| Alberta | 139,991 lbs (63,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
| Saskatchewan | 137,789 lbs (62,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
| Manitoba | 137,789 lbs (62,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
| New Brunswick | 139,991 lbs (63,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
| Nova Scotia | 139,991 lbs (63,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
| Prince Edward Island | 137,789 lbs (62,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
| Newfoundland & Labrador | 139,991 lbs (63,500 kg) | 12,125 lbs (5,500 kg) | 20,062 lbs (9,100 kg) | 37,479 lbs (17,000 kg) | 46,297 lbs (21,000 kg) |
Reduced load (half-load) restrictions apply March-May on many secondary highways. 400-series highways exempt. Check ontario.ca/511.
🧊 Spring Thaw Restrictions
March to May — secondary highways reduced by up to 50%. King's highways mostly exempt. MTO posts road-specific notices.
Higher steer and single axle limits than other provinces. Spring thaw March 1 to May 31.
🧊 Spring Thaw Restrictions
March 1 to May 31 — weight reduced by ~20% on local/collector roads. Autoroutes (highways) mostly exempt. Check Transports Québec for zone dates.
Mountain highways have additional restrictions. Check DriveBC.ca for road-specific limits and chain requirements.
🧊 Spring Thaw Restrictions
Feb to May — varies by region. Northern routes restricted first. Interior roads may see 75-100% loading on some routes. Check CVSE bulletins.
Weight varies by road class. Primary highways highest. Secondary roads may have lower limits year-round.
🧊 Spring Thaw Restrictions
March to May — Spring Road Bans reduce weights by 75-90% of normal on secondary roads. Primary highways usually exempt. Alberta Transportation posts ban dates by highway.
Spring road ban is one of the strictest in Canada. Some roads go down to 65% loading.
🧊 Spring Thaw Restrictions
Mid-March to end of May — 10-35% reduction depending on road class. Highways classified A through D with different restrictions. Heaviest cuts on thin-membrane (TMS) roads.
Very strict spring weight restrictions. Some roads lose up to 35% of normal loading capacity.
🧊 Spring Thaw Restrictions
Mid-March to end of May — Level 1 roads (PTH) reduced ~10%, Level 2 (PR) reduced ~25%, Level 3 (municipal) reduced up to 35%. Check Manitoba Infrastructure for road-specific bans.
Major corridor for cross-border traffic. Weight depends on axle spacing and road designation.
🧊 Spring Thaw Restrictions
March to May — spring weight restrictions on designated highways. DTI posts specific road closures and weight reductions.
Trans-Canada Highway (TCH) through NS allows full weights. Secondary roads may be restricted.
🧊 Spring Thaw Restrictions
March to May — spring weight restrictions posted annually. Trunk highways and local roads subject to reductions.
Confederation Bridge has specific weight and dimension limits. Check bridge authority before crossing.
🧊 Spring Thaw Restrictions
March to May — island-wide spring weight restrictions. Very strict on clay-base roads.
Ferry access only (Marine Atlantic). Book truck passages in advance. Some roads single-lane.
🧊 Spring Thaw Restrictions
March to June — spring weight restrictions on designated routes. Labrador routes may stay restricted longer due to late thaw.
For cross-border drivers — these are FHWA federal limits on US Interstate highways.
Federal limits apply on Interstate highways. States may allow higher weights on state roads with permits. Bridge Formula (Formula B) determines max weight based on axle spacing and number of axles.
🇨🇦→🇺🇸 Key Difference for Cross-Border Drivers
Canada allows up to 63,500 kg (139,991 lbs) gross. US Interstate limit is 80,000 lbs (36,287 kg). If you load to Canadian limits, you'll be overweight in the US. Plan your load for the lowest limit on your route.
Fines range from $100 to $20,000+ depending on the province and how much you're over. Your truck will be held at the scale until the load is redistributed or removed. Repeated violations affect your carrier's safety rating.
Most provinces cut weight limits by 10-25% during spring thaw (March to May). Soft ground means road damage. Dates vary by region, so check your province's transportation website.
Sliding tandems forward moves weight to the drive axles; sliding back moves weight to the trailer tandems. Each hole on the slider rail shifts approximately 200-400 lbs (90-180 kg). Always re-scale after adjusting.
This page provides a general reference for truck weight limits across major Canadian provinces. Weight limits depend on many factors including road class, axle spacing, tire type, number of tires, and seasonal restrictions. This guide covers the most common configurations for Class 8 tractor-trailers. For the most accurate limits for your specific vehicle and route, consult your provincial transportation ministry.