All oversize loads entering the City of Smithville, DeKalb County, must conform to the requirements set by the Tennessee Department of Transportation.

In general, any vehicle over 12 feet in width, 14 feet in height, and within the Class 3 weight category (over 120,000 lbs but not exceeding 140,000 lbs) should obtain an oversize load permit from the Smithville Public Works Department.

Additional permits may be required from the Tennessee Highway Patrol if the load exceeds 18 feet in width or 18 feet 6 inches in height, or if it requires a route that goes through multiple jurisdictions.

In Smithville, escort vehicles are required for loads exceeding 16 feet in width or 18 feet in height. Escort vehicles must be equipped with appropriate warning lights and flags as per Tennessee regulations.

For loads that exceed 20 feet in width or require travel on highways with limited access, a Tennessee Highway Patrol escort may be required. Arrangements for such escorts must be made at least 48 hours in advance.

To apply for an oversize load permit in Smithville, applicants must submit their request through the Tennessee Department of Transportation's online permit system or by contacting the Smithville Public Works Department directly.

Documentation required includes detailed route information, load dimensions, and weight certificates. Applicants must also provide proof of insurance and a valid USDOT number if applicable.

Oversize loads are restricted from traveling during peak traffic hours (7-9 AM and 4-6 PM, Monday through Friday) unless otherwise specified by permit.

Seasonal restrictions may apply during heavy rainfall or flooding events, as determined by the Smithville Public Works Department and the Tennessee Department of Transportation.

Certain routes through historic districts or residential areas may be restricted for oversize loads; alternative routes must be planned accordingly.

The base permit fee for oversize loads in Smithville is $150. Additional fees apply based on the complexity of the route, the size and weight of the load, and any required escorts.

For loads that require a Tennessee Highway Patrol escort, an additional fee of $200 is charged, plus $100 for each additional hour beyond the initial 2 hours.