Be Part of the Ultimate Safety & Compliance Community
Trending news, knowledge-building content, and more – all personalized to you!
Each state has passed legislative regulations whereby they have set the legal vehicle sizes and weights for their particular jurisdiction. The Federal Highway Administration (FHWA) sets the size and weight limits for the interstate and designated highway systems.
The state and federal size and weight limits apply to all vehicles – commercial, private, and non-profit. No limit may be exceeded without a permit from the state in which the vehicle is operated.
The limitations cover the legal limits allowed for width, height, length and weight for various vehicles and/or trailer configurations. They also address the limitations for vehicle traveling on interstate or designated highways within the state and/or other state or supplemental highways.
The federal bridge formula is used for those state roads that the state has designated as being part of the National Network, and while the majority of the states use the federal bridge formula for all roads in their state, some do have a separate state formula they use for other state or county roads.