Michigan oversize load rules
Legal limits, pilot car requirements, travel restrictions, superload thresholds and permit fees for oversize and overweight loads in Michigan.
Legal limits without a permit
| Width | 8′6″ on designated highways · 8′ elsewhere |
|---|---|
| Height | 13′6″ |
| Length | 53′ semitrailer and 65′ combination on designated highways · 50′ and 59′ elsewhere · 40′ single vehicle |
| Weight | 80,000 lb gross |
What Pro adds for Michigan
- 2 escort rules with counts by width, height, length and road type
- 5 travel restrictions: curfews, night, weekends, holidays
- Superload thresholds and conditions
- 4 published fee lines and permit lead time
- Lane routing with miles per state and a cost breakdown
Escort (pilot car) requirements
- 2 width, height and length thresholds with the escort count for each
- Overhang and route-type conditions
Travel restrictions
- 5 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
- 4 published fee lines with links to the fee schedule
- Validity periods and add-on charges
Common questions
When does a load need a pilot car in Michigan?
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Can oversize loads travel on weekends in Michigan?
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What is the largest load Michigan will permit on a single trip?
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Sources
- MDOT T-2, Moving Oversize/Overweight Vehicles and Loads (PDF)
- MDOT T-1, Maximum Legal Truck Loadings and Dimensions (PDF)
- MDOT permit special provisions, conditions and restrictions (PDF)
- MDOT oversize/overweight permits FAQ
Planning reference. Permits carry their own conditions, and city and county roads have separate rules. Confirm with the Michigan DOT Transport Permits Unit before moving a load. Found an error? Report it.
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