Overview
Missouri oversize and overweight permits are issued by the Missouri Department of Transportation, Motor Carrier Services Division, Permit Section. Single-trip and pre-issued permits are valid for seven travel days.
Permit approval depends on the proposed route, dimensions, axle weights and traffic-control needs.
Permit Office
| Office | Missouri Department of Transportation, Motor Carrier Services Division, Permit Section |
| Address | P.O. Box 893, Jefferson City, Missouri 65102 |
| Contact | (573) 751-7100 / 1 (800) 877-8499 |
| Hours | 7:30 A.M. – 5:00 P.M. (CT) |
Permit Basics
| Permit validity | Single-trip Missouri oversize permits are valid for seven (7) travel days; pre-issued permits are also issued for seven (7) days. |
| Operating time | 7:30 A.M. – 5:00 P.M. (CT) |
Dimensions & Weights
Routine permit limits
| Length | 150′ |
| Width | 16′ |
| Height | 16′. Over 17′ requires approval from utility companies. |
| Axle / group | Spacing | Weight |
|---|---|---|
| Single | — | 20,000 |
| Tandem | — | 46,000 |
| Tridum | — | 60,000 |
| Quad | — | 72,000 |
Escort Requirements
| Based on | Escorts required |
|---|---|
| Width | On 2-lane & undivided highways — width over 12′4″ to 14′: 1 (front on 2-lane / rear on undivided) |
| Width | On 2-lane & undivided highways — width over 12′4″ to 14′ off designated highways: 1 front & 1 rear |
| Width | On 2-lane & undivided highways — width over 14′ to 16′: 1 front & 1 rear |
| Width | On interstate and divided multi-lane highways — width over 12′4″ to 16′: 1 rear |
| Length | On 2-lane & undivided highways — length over 90′ for a combination unit, except divided highways: 1 rear |
| Height | On 2-lane & undivided highways — height over 15′6″ (with route survey): 1 with high pole |
| Height | On interstate and divided multi-lane highways — height over 15′6″ (with route survey): 1 with high pole |
- Special escort requirements may be specified whenever the size, speed or operation of the move requires them
- Flagmen may be required when the load equals or exceeds lane width, or on a 2-lane bridge where movement infringes on an adjacent lane; escorts may act as flagmen when needed
Notes
- Gross Weight — 5 Axles: 104,000
- Gross Weight — 6 Axles: 120,000
- Gross Weight — 7 Axles (1-2-4): 130,000
- Gross Weight — 7 Axles (1-2-3-1 & 1-3-2-1): 138,000
- Gross Weight — 7 Axles (1-2-2-2): 150,000
- Gross Weight — 8 Axles (1-3-4): 144,000
- Gross Weight — 8 Axles (all other configurations): 160,000
- Gross Weight — 9 Axles (1-4-4): 156,000