DOT & ALASKA STATE WEIGHT LIMITS
Gross Weight
80,000 lbs on the Interstate System
Single Axle
20,000 lbs
Tandem Axle
38,000 lbs
Other State Provisions & Exemptions
- Tridem axle weight limit is 42,000 lbs.
- There are exceptions to the 80,000-lb GVW on parts of the AK-1, AK-2, and AK-3. They are subject to the Federal Bridge Formula. FBF is W = 500 (LN/N-1 + 12N + 36) where W is the gross weight of any group of two or more consecutive axles to the nearest 500 lbs, L is the distance in feet between the outer axles of any group of two or more consecutive axles, and N is the number of axles in the group being calculated.
- Alaska also determines GVW limits by the number of axle groups and spacing.
- Vehicles with the idle reduction technology can have axle, vehicle, or bridge formula weights of up to 400 lbs over the limit.
The information provided here is not comprehensive and may not reflect the most recent state limits. Additional codes, regulations, and exemptions may apply. Please visit the Alaska DOT website for current information.
THE DALLES OR 97058
To: Anchorage, AK 99501
Dimensions: 26′ L x 8’5″ W x 9’6″ H
Weight: 31,750 lbs
2006 JOHN DEERE 790
From: Lewisburg TN 37091
To: Sterling, AK 99672
Dimensions: 7’4″ L x 6′ W x 6’10” H
Weight: 2,105 lbs
1998 INTERNATIONAL 4700
From: Portland OR 97214
To: Anchorage, AK 99501
Dimensions: 22′ L x 8’6″ W x 9’8″ H
Weight: 22,000 lbs
Equipment & Machinery
Freight
Container
Livestock
Commodities