Until 1982, Federal law set only upper limits (or ceilings) on Interstate System weight limits. However, the single-or-tandem-axle weight limits supersede the Bridge Formula limits for all axles not more than 96 inches apart. Allowable weight depends on the number of axles a vehicle has and the distance between those axles. The formula limits the weight on groups of axles in order to reduce the risk of damage to highway bridges. 30, 2005, a single axle weight limitation of 20,000 pounds or greater but less than 24,000 pounds may not enforce a single axle weight limit on these vehicles of less than 24,000 pounds. Any State that has enforced, in the period beginning Oct. Title 23: 658.17(k) Any over the road bus, or any vehicle which is regularly and exclusively used as an intrastate public agency transit passenger bus, is excluded from the axle weight limits in paragraphs (c) through (e) of this section until Oct. This section exempts them from the 34,000 lb. on each axle provided they do not exceed manufacturer tire load ratings. The maximum gross and axle weight limitations are as follows and may not be operated in excess of: Wheel, Axle, GrossĪn overweight permit must be obtained to authorize any exception to the maximum weight limitations listed above.Ī highway authority may prohibit the operation of any vehicle or impose restrictions on the weight of a vehicle upon any highway under its jurisdiction.Įxception: Passenger buses may carry 24,000 lbs.
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