Michigan State Trucking Permit Information
MICHIGAN
DEPARTMENT OF TRANSPORTATION
TRANSPORT PERMITS UNIT
7050 WEST SAGINAW
SUITE 2/M-43
Michigan State Trucking Permit Information website for overweight, wideload, oversized and heavy haul transport: Click Here
LANSING, MICHIGAN 48917
PHONE: 517-373-2120
HOURS: MONDAY - FRIDAY 7:30 A.M. - 4:30 P.M
EASTERN TIME
| LEGAL LIMITS | DESIGNATED HIGHWAY | ALL OTHER ROADS |
| Single | 20,000 | 18,000 |
| Tandem | 34,000 5 axles |
32,000 rig w/more than 5 axles on 1 tandem, 26,000 on next |
| Tridum | 42,000 (39,000) (Based on Bridge Fromula) |
13,000/axle depending on spacings |
| Gross Weight | 80,000 5 axles 11 axles 164,000 Federal Bridge Formula applies |
80,000 |
| Width | 8'6" | 8' 0" 8'6" Buses |
| Height | 13'6" | 13'6" |
| Semi-trailers | 53' | 50' 53' must have a kingpin setting of 40'6" measured from kingpin to center of tandem, trailers may only have 3 axles |
OVERHANG 3' front, 4' rear
PERMIT LIMITS
ROUTINE ISSUE
| Weight: | Handled on a case by case basis |
| Length: | 150' |
| Width: | 16' 14' during spring restrictions |
| Height: | 15' |
If load exceeds any of these dimensions or 180,000 lbs., refer to the section on Super Loads.
PERMITS VALID FOR:
Single trip permits are valid for five (5) consecutive days (excluding Saturday & Sunday).
.
OPERATING TIME
Sunrise to sunset
WEEKEND TRAVEL
Loads that are only overweight may travel anytime 24/7
DIVISIBLE LOADS
Will allow as long as weight remains legal and the additional item does not create the over
dimension.
EXCEPTIONS
Loads may be hauled with blades and counterweights etc attached, blades and counterweights
that are part of the equipment can be hauled with the load, buckets and drag line components must
be hauled separately, prefabricated items (structural steel, trusses, tanks, etc) limited to 16' wide,
15' high and 150' long.
INFORMATION NEEDED TO ORDER A WIDELOAD, OVERSIZE AND HEAVY HAUL PERMITS:
Applicant's name and address, load description, vehicle description, tractor unit, trailer license, trailer
length, overall dimensions, total number of axles, overhang front and rear, gross weight, origin and
destination routes.
ESCORTS FOR WIDELOAD AND OVERSIZED SHIPPING
| When Escorts are Needed: | #Escorts |
| On All Highways: | |
| Width over 12' to 14' | 1 |
| Width over 14' | 1 Rear |
| Length over 100' | 2 (Front & Rear) |
| Height over 15'5 with high pole | 1 Front |
| Height over 15' with high pole | 2 (Front & Rear) |
| Overhang over 15' | 1 Rear |
| *Route Survey: Applications for permit in excess of 13'6" in height shall certify that the proposed route has been traveled to assure vertical clearance | |
SPRING WEIGHT RESTRICTIONS
Usually February to April normal maximum axle weights allowable on rigid pavements shall be
reduced 25% and the maximum wheel load shall not exceed 525 lbs per inch width of tire, on
flexible pavements the maximum axle weights are reduced 35% and the maximum wheel load
shall not exceed 450 lbs per inch width of tire, no overweight permits are issued during spring
frost restrictions.
*CONTACT STATE FOR ADDITIONAL INFORMATION ON RESTRICTED TRAVEL FOR WIDELOADS, OVERSIZED AND OVERWEIGHT PERMITTED CARGO
Overweight, Oversized & Wideload SuperLoads
Loads 16' wide, 15' high, 150' long and 200,000 lbs are considered super loads.
The following information must be submitted in writing by the shipper: Description of load,
number of pieces, load dimensions and overall dimensions, if over height a statement certifying
the route that has been surveyed, weight of object, origin and destination, routes, dates of move,
reason the load cannot be reduced and name of transporter if known, drawings required if more
than 11 axles. Allow 1 to 10 days for approval
*CONTACT STATE FOR ADDITIONAL INFORMATION FOR OVERSIZED, OVERWEIGHT AND WIDE LOAD
SUPER LOADS
