Legal size limits without a permit
| Measurement | Mississippi legal limit |
|---|---|
| Height | 13'6" (no permit) |
| Width | 8'6" (no permit) |
| Front Overhang | Confirmed at filing |
| Rear Overhang | 4' (no permit) |
Axle and gross weights
How much each axle group and the whole vehicle can carry in Mississippi, without a permit and with an overweight permit.
| Axle group | Legal limit | With a permit |
|---|---|---|
| Steer axle | Confirmed at filing | Confirmed at filing |
| Single axle | 20,000 lbs | Up to 15,000 lbs above legal on special/heavy-equipment permits |
| Tandem axle | 34,000 lbs | 44,000 lbs (sealed containers) / 45,000 lbs (heavy equipment) |
| Tridem axle | Confirmed at filing | Confirmed at filing |
| Quad axle | Confirmed at filing | Confirmed at filing |
| Gross weight | 80,000 lbs | Standard permits: 80,000–95,000 lbs; Special Heavy Equipment blanket: up to 150,000 lbs |
Superload: Loads of 189,999 lbs or greater require a Super Load Permit
Permit types we file in Mississippi
Single Trip PermitOversize, overweight, or combined authorization for one move.
Oversize Blanket / Annual PermitYear-round authorization plus specialty blankets for sealed containers, heavy equipment, forestry, poles, and hay hauling.
Super Load PermitCustom, individually-routed permit required once a load exceeds the Super Load thresholds.
Maximum dimensions with a permit
| Dimension | Maximum with a permit |
|---|---|
| Length | 120' (Oversize Blanket Permit ceiling) |
| Width | 14' (Oversize Blanket Permit ceiling) |
| Height | 14' (Oversize Blanket Permit ceiling) |
| Rear Overhang | 14'11" (Oversize Blanket Permit ceiling) |
Exceeding width 17', length 121', or height 15'7" pushes a load into Mississippi's Super Load category, requiring individual route review.
Escorts and travel restrictions
Escort & pilot car rules
- Daylight, two-lane roads: loads 13'+ wide require at minimum a front escort.
- Night movement: 10'+ wide on two-lane roads requires a front escort.
- Super Loads 160'+ long require two blue-light escorts; loads 15'7"+ tall require two blue-light escorts plus a height-pole escort.
When you can travel
- Daylight-only travel required for loads over 12' wide.
- Night movement allowed only for loads ≤12' wide, ≤150,000 lbs, ≤99' long, ≤13'6" high.
- Holiday ban: no movement after noon the day before, or on, major federal holidays.
Signs, flags and lights
Most states require
- An “OVERSIZE LOAD” banner on the front of the truck and the rear of the load.
- Red or fluorescent orange warning flags at each corner and at the widest points of the load.
- Amber warning lights or clearance lights when moving at night, where night travel is allowed.
Mississippi specifics
- Banner size, flag size and light rules for Mississippi are listed on your permit.
- We include them in your permit notes so your driver has them before the trip.
Rules change. Limits and requirements are set by MDOT and can change. We confirm the current rules for your exact load before filing.