Missouri oversize load rules
Legal limits, pilot car requirements, travel restrictions, superload thresholds and permit fees for oversize and overweight loads in Missouri.
Legal limits without a permit
| Width | 8′6″ |
|---|---|
| Height | 14′ on interstates and within 10 miles of designated highways · 13′6″ on other state routes · 15′ in commercial zones |
| Length | 53′ tractor-semitrailer · 65′ truck-trailer combination |
| Weight | 80,000 lb gross |
At a glance
| Escorts | 9 escort rules, starting at 12′6″ wide |
|---|---|
| Superload | 4 review triggers (height, length, weight, width) |
| Travel | 6 restrictions (curfews, night, holidays) |
| Fees | 5 published fee lines |
Escort (pilot car) requirements
- 9 width, height and length thresholds with the escort count for each
- Police escort triggers
- Overhang and route-type conditions
Travel restrictions
- 6 restrictions: curfews, night travel, weekends and holidays
- Which ones apply to a given load size
Superloads
- Exact thresholds and what the state requires past them
- Lead times, route surveys and police escort conditions
Permit fees
- 5 published fee lines with links to the fee schedule
- Validity periods and add-on charges
Common questions
When does a load need an escort in Missouri?
Over 12′6″ wide, over 15′6″ high (a height pole vehicle), or over 110′ long on undivided highways and 125′ on all highways. Highway Patrol escorts start at over 16′ wide on two-lane roads, 18′ wide elsewhere, 17′ high or 150′ long.
Can oversize loads travel at night in Missouri?
Only loads up to 12′6″ wide at legal height and up to 110′ long. Everything else runs half an hour before sunrise to half an hour after sunset.
What is a superload in Missouri?
Over 16′ wide, 16′ high, 150′ long or 160,000 lb. Allow two weeks for route evaluation and budget for a bridge analysis fee.
Sources
Planning reference. Permits carry their own conditions, and city and county roads have separate rules. Confirm with the MoDOT Motor Carrier Services before moving a load. Found an error? Report it.
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