"Effective 7 a.m. Friday, May 15, MDOT will lift the remaining seasonal weight restrictions on all state trunkline highways in the state of Michigan. State routes typically carry I, M or US designations."
| Field | Detail |
|---|---|
| Status | INACTIVE All seasonal weight restrictions lifted statewide as of May 15, 2026 at 7:00 AM (Bulletin #8). The 2026 spring weight restriction season is complete. |
| Status Timestamp | May 15, 2026 at 7:00 AM (Bulletin #8 effective time) |
| Coverage | State trunkline highways only (I, M, and US designations). Local roads are not covered by this bulletin. |
| Effective Dates | Season opened February 17, 2026 (Bulletin #1). Season closed May 15, 2026 at 7:00 AM (Bulletin #8). All restrictions lifted statewide as of that date. |
| Weight Limits | No weight reductions currently in effect. During restriction periods: Seasonal routes (solid or dashed red on MDOT Truck Operators Map) 25% reduction on rigid pavement; 35% reduction on flexible pavement. All Season routes (green or gold) no reduction. |
| Key Roads | All state trunkline highways statewide restrictions fully lifted as of May 15, 2026 at 7:00 AM. |
| Exemptions | Not applicable no restrictions currently in effect. During active restriction periods: extended permits valid for oversize only (not overweight); single-trip permits not issued for overweight loads, loads over 14 ft wide, loads over 11 axles, or loads over 150 ft overall length in restricted areas. |
| Penalties | Not specified |
| Contact | MDOT: 1-800-787-8960 | Canada/New Jersey callers: 517-335-0023 | www.michigan.gov/truckers |
| Primary Status Source URL | https://mdotjboss.state.mi.us/APSWB/SWBHome.htm?bulletin=weight |
2026 Season Summary
The 2026 Michigan spring weight restriction season ran from February 17, 2026 through May 15, 2026. Eight bulletins were issued progressively lifting restrictions as frost conditions improved. All seasonal weight restrictions on all state trunkline highways statewide are now lifted. Normal legal axle weights are in effect.
Weight Limits by Route Type (Reference for Future Restriction Periods)
| Route Classification | Map Color | Pavement Type | Weight Reduction |
|---|---|---|---|
| All Season Routes | Green or Gold | All | 0% No reduction in legal axle weight |
| Seasonal Routes | Solid or Dashed Red | Rigid | 25% reduction |
| Seasonal Routes | Solid or Dashed Red | Flexible | 35% reduction |
Use the MDOT Truck Operator's Map to identify route classification. These reductions apply only during active restriction periods.
2026 Bulletin History
Bulletin #1 February 17, 2026 (Superseded)
- Effective: February 17, 2026 at 6:00 PM
- Restrictions imposed on state trunklines from the Indiana/Ohio border north to US-10 in Ludington (Mason County) east to US-127 (Clare County) north to M-61 east to US-23 in Standish (Arenac County)
- Status: Superseded by Bulletin #2
Bulletin #2 March 9, 2026 (Superseded)
- Effective: March 9, 2026 at 6:00 AM
- Restrictions lifted from southern border north to M-43 (South Haven) east on M-43 to US-131, south to I-94, east to US-23, north to I-96, west to M-59, east ending at I-94 interchange in Macomb County
- Status: Superseded by Bulletin #3
Bulletin #3 March 30, 2026 (Superseded)
- Effective: March 30, 2026 at 6:00 AM
- Restrictions lifted from southern border north to US-10 in Ludington, east to US-127 (Clare County), south to US-10, east to M-25 in Bay City (Bay County); entire thumb area included
- Status: Superseded by Bulletin #4
Bulletin #4 April 13, 2026 (Superseded)
- Effective: April 13, 2026 at 6:00 AM
- Restrictions lifted from southern border north to US-10 in Ludington, Mason County from M-116 east to M-66 in Osceola County, north to M-61 in Osceola County, east to US-23 in Standish, Arenac County; entire thumb area included
- Status: Superseded by Bulletin #5
Bulletin #5 April 23, 2026 (Superseded)
- Effective: April 23, 2026 at 6:00 AM
- Restrictions lifted on all state trunkline highways from the southern Michigan border north to and including the Mackinac Bridge
- Frost restrictions remained active on all state trunkline highways north of the Mackinac Bridge
- Status: Superseded by Bulletin #6
Bulletin #6 April 30, 2026 (Superseded)
- Effective: April 30, 2026 at 7:00 AM
- Restrictions lifted on all state trunklines from the southern Michigan border north through US-2/US-141 at the Menominee River bridge west of Iron Mountain, east on US-2 to St. Ignace, north on I-75 to M-134, east to and including M-134 on Drummond Island; also M-149 in Schoolcraft County and M-185 on Mackinac Island
- Status: Superseded by Bulletin #7
Bulletin #7 May 8, 2026 (Superseded)
- Effective: May 8, 2026 at 7:00 AM
- Restrictions lifted on all state trunkline highways from the southern Michigan border north through US-2 (Wisconsin border at Ironwood) east to M-28 in Wakefield, east on M-28 to I-75, north on I-75 to the International Bridge in Sault Ste. Marie
- Frost restrictions remained active on all state trunkline highways north and west of the US-2, M-28, and I-75 line
- Status: Superseded by Bulletin #8
Bulletin #8 May 15, 2026 (Final Season Closed)
- Effective: May 15, 2026 at 7:00 AM
- All remaining seasonal weight restrictions lifted statewide on all state trunkline highways in Michigan
- The 2026 spring weight restriction season is complete
- No further bulletins expected for the 2026 season
Contact & Resources
- MDOT Permit Office: 1-800-787-8960
- Canada / New Jersey callers: 517-335-0023
- Truckers portal: www.michigan.gov/truckers
Source
Primary source: MDOT Spring Weight Bulletin https://mdotjboss.state.mi.us/APSWB/SWBHome.htm?bulletin=weight
Retrieved: May 13, 2026 at 20:02 UTC
Status observed: May 15, 2026 at 7:00 AM (Bulletin #8 effective time)
This page covers state trunkline highways (I, M, US designations) only. Local road restrictions are not addressed by this bulletin.
