Triaxle vehicles will be considered as a special type of vehicle and will be given permits for 73,000 pounds if they meet the minimum distance from front axle centerline to rear axle centerline as provided in 700 CMR 8.13: Attachment B: Standard Permit Parameters Reducible Loads. The Department will grant permits to these vehicles for an additional 1,000 pounds, up to a maximum of 77,000 pounds for a triaxle vehicle measuring 19'6" or greater in accordance with the following schedule: 15'4" to 16'5", 73,000 pounds; 16'6" to 17'5", 74,000 pounds; 17'6" to 18'5", 75,000 pounds; 18'6" to 19'5", 76,000 pounds; 19'6" and up, 77,000 pounds. When the vehicle is carrying a permit load the movable axle must be fully engaged.
Permits will only authorize travel on specifically designated state highways or ways determined by the Department to be through routes which have bridges, structures and pavements of a capacity sufficient to indicate that they will be able to safely support vehicles of these weights on the aforesaid number of axles. These specifically designated ways are enumerated in 700 CMR 8.12: Attachment A: List of Massachusetts Department of Transportation State Highways.
These permits for travel over the designated ways do not under any circumstances allow travel over bridges which are posted for a weight which is less than the gross vehicle weight together with load which is then being carried.
No permit will be granted for a weight in excess of the weight for which said motor vehicle, trailer, semi trailer or semi trailer unit is registered or in excess of its gross vehicle weight rating.
Permits will be issued on an annual basis unless otherwise indicated on the permit, but the Department specifically reserves the right to revoke any permit or class of permits, notwithstanding any expiration date contained on the permit to the contrary, when in its judgment and discretion public safety or sound engineering judgment warrant.
Table 1
Type of Permit | Fee |
Irreducible Load Permit Exceeding Any Legal Limit for Size and Weight Pursuant to 700 CMR 8.00 | $400.00 - Annually |
Irreducible Load Permit Exceeding Any Legal Limit for Size and Weight Pursuant to 700 CMR 8.00 | $40.00 - Per Trip |
Super Load Weight >130,000 pounds - Detailed Engineering Calculations Required | $300.00 - Single Trip |
Reducible Load Permit Exceeding Any Legal Limit for Size and Weight Pursuant to 700 CMR 8.00 | $50.00 per every 1,000 pounds exceeding the Federal Bridge Formula |
700 CMR, § 8.05