All oversize loads entering the City of Duncan must conform to the requirements set by the South Carolina Department of Transportation.

In general, any vehicle over 12 feet in width, 14 feet in height, and within the Class III weight classification should obtain an oversize load permit from the Duncan Public Works Department. Additionally, oversized loads carrying construction materials will need to provide proof of insurance and a detailed route plan prior to transporting.

The City of Duncan also requires all oversized vehicles to be escorted by a trained pilot car when traveling on Route 290 during peak hours (Monday-Friday, 7-9 AM and 4-6 PM).

In Duncan, escort vehicles are required for all oversized loads exceeding 14 feet in width or 16 feet in height. Local police departments will provide escorts for a flat fee of $200 per hour, with a minimum two-hour requirement.

Additionally, pilot cars must be equipped with functioning lights and a valid commercial insurance policy.

To obtain an oversize load permit in Duncan, applicants can submit their request online through the City's website or by phone at (864) 593-2111. Permits typically take 3-5 business days to process.

Applicants must provide a detailed route plan, proof of insurance, and a copy of the vehicle registration.

The City of Duncan restricts oversized vehicles from traveling on Main Street during peak hours (Monday-Friday, 7-9 AM and 4-6 PM). Alternative routes will be provided by the Public Works Department.

Oversized loads are also prohibited from traveling through the Duncan Historic District during weekdays.

The standard permit fee for oversized loads in Duncan is $500, with an additional $100 per hour for escort services.

Fees may vary depending on the load size, weight, or distance traveled.