State-by-State Oversize Permit Requirements
A Comprehensive Summary of Regulations for Interstate Carriers
Understanding Oversize Permit Requirements
Transporting loads that exceed standard legal dimensions requires more than just power—it demands compliance. Whether you’re an independent owner-operator or managing a fleet, knowing the size limits and permit rules in each state is essential for safe, legal, and efficient operations. This article outlines oversize and overweight permit requirements across the U.S., highlighting key limits and state-by-state variations.
Why State Regulations Matter
Each state sets its own rules for maximum vehicle dimensions and requirements for oversize transport. Failing to comply can result in fines, detentions, permit denials, and delays. Knowing these regulations ahead of time allows you to:
- Plan efficient routes
- Avoid violations and citations
- Ensure timely deliveries
- Maintain a professional reputation
Having a quick-reference resource can save hours of research and prevent costly mistakes.
Key Permit Parameters to Know
When planning oversize transport, there are three primary dimensions to pay attention to:
- Overall Length: This includes the entire vehicle and load—from the front of the cab to the end of the load, including any overhang.
- Maximum Height: The total height from the ground to the top of the load. Most states allow up to 13 feet 6 inches to 14 feet before a permit is required.
- Escort Requirements: Many states mandate pilot or escort vehicles once loads exceed certain dimensions, especially over 12 feet wide or 14 feet tall.
State-by-State Overview of Oversize Permit Limits
The chart below summarizes the standard maximum overall length and height allowed per state before a permit is required:
| State | Max Length | Max Height |
|---|---|---|
| Alabama | 65′ | 13′6″ |
| Alaska | 53′ | 14′0″ |
| Arizona | 65′ | 14′0″ |
| Arkansas | 65′ | 13′6″ |
| California | 65′ | 14′0″ |
| Colorado | 75′ | 14′6″ |
| Connecticut | 65′ | 13′6″ |
| Delaware | 65′ | 13′6″ |
| Florida | 65′ | 13′6″ |
| Georgia | 65′ | 13′6″ |
| Hawaii | 65′ | 13′6″ |
| Idaho | 65′ | 14′0″ |
| Illinois | 65′ | 13′6″ |
| Indiana | 65′ | 13′6″ |
| Iowa | 65′ | 13′6″ |
| Kansas | 65′ | 14′0″ |
| Kentucky | 65′ | 13′6″ |
| Louisiana | 65′ | 13′6″ |
| Maine | 65′ | 13′6″ |
| Maryland | 65′ | 13′6″ |
| Massachusetts | 65′ | 13′6″ |
| Michigan | 65′ | 13′6″ |
| Minnesota | 75′ | 13′6″ |
| Mississippi | 65′ | 13′6″ |
| Missouri | 65′ | 13′6″ |
| Montana | 75′ | 14′0″ |
| Nebraska | 65′ | 14′0″ |
| Nevada | 65′ | 14′0″ |
| New Hampshire | 65′ | 13′6″ |
| New Jersey | 65′ | 13′6″ |
| New Mexico | 65′ | 14′0″ |
| New York | 65′ | 14′0″ |
| North Carolina | 65′ | 13′6″ |
| North Dakota | 75′ | 14′0″ |
| Ohio | 65′ | 13′6″ |
| Oklahoma | 65′ | 14′0″ |
| Oregon | 65′ | 14′0″ |
| Pennsylvania | 65′ | 13′6″ |
| Rhode Island | 65′ | 13′6″ |
| South Carolina | 65′ | 13′6″ |
| South Dakota | 75′ | 14′0″ |
| Tennessee | 65′ | 13′6″ |
| Texas | 65′ | 14′0″ |
| Utah | 65′ | 14′0″ |
| Vermont | 65′ | 13′6″ |
| Virginia | 65′ | 13′6″ |
| Washington | 65′ | 14′0″ |
| West Virginia | 65′ | 13′6″ |
| Wisconsin | 65′ | 13′6″ |
| Wyoming | 75′ | 14′0″ |
Planning for Escort Requirements
While each state differs, many require escort vehicles when:
- Width exceeds 12′
- Height exceeds 14′
- Length exceeds 90–120′ depending on the road type
Some superloads may require multiple escorts or law enforcement. Always verify current thresholds before hauling an oversize load.
Final Tips for Carriers
- Plan ahead: Secure permits for each state in your route before departure
- Measure twice: Ensure all dimensions—including overhangs—are accurate
- Know your route: Some states have bridge or tunnel restrictions for certain load sizes
- Stay informed: Permit requirements are updated regularly—always confirm with state DOTs or a trusted permit service
Get Expert Help from TruckTabs
Navigating state-by-state oversize and overweight permit requirements doesn’t have to be overwhelming. At TruckTabs, we simplify the process so you can focus on what matters—moving freight safely and legally.
Contact us today for fast, accurate permit assistance and expert guidance for your next oversize haul.
