| Field | Detail |
|---|---|
| Status | ACTIVE Restrictions in effect on all state trunklines north of defined corridor (including entire Upper Peninsula and Mackinac Island); lifted south of corridor |
| Status Timestamp | March 9, 2026 at 6:00 AM (Bulletin #2 effective time) |
| Coverage | State trunkline highways only (M, I, and US designations). Local roads are not covered by this bulletin. |
| Effective Dates | Season opened February 17, 2026 (Bulletin #1). Bulletin #2 partially lifted restrictions effective March 9, 2026. No end date specified. |
| Weight Limits | Seasonal routes (red on MDOT map): 25% reduction on rigid pavement; 35% reduction on flexible pavement. All Season routes (green or gold): no reduction. |
| Key Roads | Restricted (north of corridor): All state trunklines north of M-43 / US-131 / I-94 / US-23 / I-96 / M-59; entire Upper Peninsula; Mackinac Island. Lifted (south of corridor): All state trunklines south of that corridor. |
| Exemptions | Extended permits valid for oversize only (not overweight) in restricted area. Single-trip permits will not be issued for overweight loads, loads over 14 ft wide, loads over 11 axles, or loads over 150 ft overall length in the restricted area. |
| 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 |
Weight Limits by Route Type
| 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 before dispatch.
Bulletin History & Current Coverage
Bulletin #1 February 17, 2026 (Superseded)
- Effective: February 17, 2026 at 6:00 PM
- Area: Indiana/Ohio border north to US-10 in Ludington (Mason County) from M-116 east to US-127 in Clare County, north on US-127 to M-61, east on M-61 to US-23 in City of Standish, Arenac County
- Status: Superseded by Bulletin #2
Bulletin #2 March 9, 2026 (Active)
- Effective: March 9, 2026 at 6:00 AM
- Restrictions lifted on all state trunklines south of: M-43 in South Haven east to US-131 in Kalamazoo County south on US-131 to I-94 east on I-94 to US-23 in Washtenaw County north on US-23 to I-96 in Livingston County west on I-96 to M-59 in Livingston County east on M-59 to I-94 interchange in Macomb County
- Restrictions remain active on all state trunklines north of the above corridor, including the entire Upper Peninsula and Mackinac Island
- No end date specified
Permit Restrictions in Weight-Restricted Area
- Extended permits are valid for oversize only not overweight within the restricted area
- Single-trip permits will not be issued for overweight loads
- Single-trip permits will not be issued for loads exceeding 14 feet in width
- Single-trip permits will not be issued for loads exceeding 11 axles
- Single-trip permits will not be issued for loads exceeding 150 feet in overall length
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: March 9, 2026 at 14:38 UTC
Status observed: March 9, 2026 at 6:00 AM (Bulletin #2 effective time)
This page covers state trunkline highways (M, I, US designations) only. Local road restrictions are not addressed by this bulletin.
