Arkansas Oversize and Overweight Permit Regulations

Operating oversize or overweight loads in Arkansas requires adherence to strict regulations managed by the Arkansas Department of Transportation (ARDOT) and the Arkansas Highway Police. The state defines legal dimensions for commercial vehicles as 8 feet 6 inches in width, 13 feet 6 inches in height, and a maximum gross vehicle weight of 80,000 pounds. Any load exceeding these parameters must obtain a special permit before traveling on state-maintained highways. Arkansas is unique in its geographic placement, serving as a critical transit corridor for Interstate 40 and Interstate 30, which carry significant transcontinental freight volumes. DispatchTool assists carriers in managing these complex movements by organizing permit documentation and truck-safe routing that respects bridge clearances and weight restrictions across the Natural State. The platform allows dispatchers to store specific state permit numbers alongside load details to ensure drivers have immediate access to compliance data during roadside inspections. You can create a DispatchTool account to streamline your heavy-haul documentation and fleet settlement processes.

Legal Dimensions and Weight Limits

In Arkansas, the legal width limit is 8 feet 6 inches on all primary highways. The legal height is capped at 13 feet 6 inches, while the length for a single unit is limited to 45 feet. For a semi-trailer combination, the trailer length is generally restricted to 53 feet, provided the kingpin-to-rear-axle distance meets state standards. Weight limits follow the Federal Bridge Formula, with a maximum of 20,000 pounds on a single axle and 34,000 pounds on a tandem axle. According to ARDOT, any vehicle exceeding a gross weight of 80,000 pounds requires an overweight permit, even if individual axle weights are within legal limits.

Permit Types and Associated Fees

Arkansas offers several permit categories based on the frequency and nature of the haul. A single-trip permit for an oversize load typically costs $17.00, while overweight permits start at $17.00 plus additional mileage charges if the weight exceeds certain thresholds. For example, loads over 80,000 pounds are assessed a fee of $0.08 to $0.12 per ton-mile depending on the total configuration. Annual permits are available for specific commodities and configurations, such as mobile homes or sealed containers, with fees ranging from $100.00 to over $500.00. The ARDOT Permit Office processes these applications through their online portal, typically requiring a 24-hour lead time for complex moves.

Escort and Pilot Car Requirements

Escort requirements in Arkansas are triggered by the dimensions of the load. One front escort is required on two-lane highways for loads exceeding 12 feet in width. If a load exceeds 14 feet in width, two escorts (front and rear) are mandatory on all highways. Height-sensitive loads exceeding 14 feet 6 inches generally require a front escort equipped with a height pole. For extremely long loads, specifically those over 100 feet in length, a rear escort is required to assist with maneuvering through intersections and curves. Escort drivers must maintain radio contact with the truck driver at all times to ensure safety near narrow bridge structures.

Operating Hours and Holiday Restrictions

Standard oversize movements in Arkansas are permitted from sunrise to sunset, seven days a week, provided the load does not exceed 10 feet 6 inches in width. However, loads exceeding 12 feet in width are strictly prohibited from traveling on Sundays. Arkansas also enforces holiday restrictions during New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas. Travel is typically restricted starting at 12:00 PM the day before the holiday and remains restricted until sunrise the following business day. Heavy haulers must plan routes carefully to avoid being staged in metropolitan areas like Little Rock or Fayetteville during peak traffic hours.

Safety Equipment and Warning Signs

All oversize loads must display 'Oversize Load' signs on the front and rear of the vehicle. These signs must be at least 7 feet wide and 18 inches high, with black letters 10 inches tall on a yellow background. Red or fluorescent orange flags, minimum 18 inches square, must be attached to the four corners of the load or the widest extremities. If the load is permitted for night travel—which is rare and usually limited to overweight-only loads—it must be equipped with amber clearance lights and side marker lamps as specified by Arkansas Code Title 27. Failure to display proper signage can result in fines exceeding $200 per occurrence during Highway Police inspections.

Superload Criteria and Bridge Analysis

Arkansas classifies any load exceeding 180,000 pounds in gross weight or 16 feet in width as a 'Superload.' These applications undergo a rigorous engineering review by ARDOT’s bridge division to ensure the infrastructure can support the concentrated weight. A bridge analysis fee, often starting at $100.00, is applied to these permits. The review process for Superloads can take up to 10 business days, and carriers may be required to provide a specific axle spacing diagram. In some cases, the state may mandate a police escort from the Arkansas Highway Police for moves that require crossing the centerline of a bridge or highway.

Sources

Arkansas Department of Transportation (ARDOT) Permit Manual (2024) — https://www.ardot.gov/divisions/highway-police/permits/ Arkansas Code Title 27 - Transportation (2023) — https://law.justia.com/codes/arkansas/2023/title-27/ American Transportation Research Institute (ATRI) State Laws (2024) — https://truckingresearch.org/

Frequently asked

What is the maximum weight allowed on a tandem axle in Arkansas with a permit?

With a routine overweight permit, Arkansas allows up to 46,000 pounds on a tandem axle, provided the tires and axles are rated for the load and the gross weight does not exceed the permitted limit.

Do I need a permit for a load that is exactly 8 feet 6 inches wide?

No, 8 feet 6 inches is the legal width limit in Arkansas. A permit is only required if the load exceeds this width, even by a fraction of an inch.

Are there specific curfews for oversize loads in Little Rock?

Yes, loads exceeding 12 feet in width are generally restricted from traveling in the Little Rock, North Little Rock, and West Memphis metropolitan areas during peak hours, typically 7:00 AM to 9:00 AM and 4:00 PM to 6:00 PM.

How much does a single-trip oversize permit cost in Arkansas?

A basic single-trip oversize permit costs $17.00. If the load is also overweight, the fee increases based on the weight and mileage traveled within the state.