All oversize loads entering Charleston, Tennessee must conform to the requirements set by the Tennessee Department of Transportation (TNDOT) and the Charleston Department of Transportation (CHADOT).

In general, any vehicle over 13 feet in width, 16 feet 0 inches in height, and within the super heavy weight class (over 284,149 lbs) should obtain an oversize load permit from the TNDOT and potentially additional permits from CHADOT.

To navigate the complexities of Charleston's infrastructure, it's crucial to plan routes that avoid sensitive areas like Charleston Tech Hub and major construction zones along the the Charleston Harbor area.

Escort vehicles are required for oversize loads exceeding 15 feet in width or 15 feet 0 inches in height on highways and certain city streets. The Tennessee State Police often require escorts for loads that are particularly large or heavy.

For movements within Charleston, the Charleston Department of Transportation may mandate police escorts for oversize loads, especially during peak traffic hours. Scheduling these escorts requires advance notice, typically at least 54 hours prior to the move.

The Tennessee Department of Transportation manages the primary application process for oversize permits, with supplementary permits required from Charleston Department of Transportation for transit through Charleston limits.

Required documentation for Charleston permits includes axle configuration diagrams, proof of insurance with appropriate coverage levels, and detailed transport plans. Engineering assessments may be required for loads exceeding standard weight thresholds on certain streets and bridges.

Charleston has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-9 am and 4-6 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Charleston Heritage Festival and the the Charleston Arts Marathon, which may impact routing and scheduling.

Certain neighborhoods, such as Downtown Charleston and areas around Charleston Convention Center, have restricted access for oversize loads. Alternative routes should be planned in advance to avoid these areas.

The base permit fee for an oversize load in Tennessee is $40, with additional fees for super heavy loads (over 200,000 lbs) ranging from $150 to $350 depending on the complexity of the move.

For movements within Charleston, Charleston Department of Transportation may charge additional fees for city-specific permits, which can range from $75 to $500 or more for particularly complex routes or those requiring extensive coordination with city agencies.