Every year, the state of Minnesota enforces Spring Load Restrictions (SLR) to protect its roadways from damage caused by heavy loads on thawing pavement. These restrictions are crucial for preserving infrastructure but can be challenging for carriers and drivers transporting oversized or overweight loads.
In this blog, we’ll break down Minnesota’s Spring Load Restrictions, explain how they impact freight movement, and provide practical tips for staying compliant.
What Are Spring Load Restrictions (SLR)?
During the spring thaw, Minnesota’s roadways become more vulnerable to damage due to the softened ground underneath the pavement. To minimize the impact of heavy loads, Spring Load Restrictions (SLR) are enforced on state, county, and local roads.
These restrictions reduce the allowable axle weight on affected roads, requiring carriers to either:
- Adjust Load Weight – To comply with reduced axle weight limits.
- Add More Axles – Increasing the number of axles on your configuration helps distribute the load more evenly, complying with axle weight limits.
- Plan Alternative Routes – To avoid restricted roadways.
- Obtain Special Permits – For loads that exceed SLR limits but are necessary for essential deliveries (Example: emergency equipment, medical supplies, etc..)
Spring Load Restrictions typically begin in early March and last until mid-May, but the exact dates vary depending on weather conditions and road stability.
Minnesota Spring Load Restriction Dates for 2025
According to the Minnesota Department of Transportation (MnDOT), the Spring Load Restrictions (SLR) for 2025 are set to start on 03/03 in the following zones:
- Metro
- South
- Southeast
There is currently no specified date for the other zones, including Central, North Central, and North.
To stay updated on the latest dates, visit the MnDOT Seasonal Load Limits Page for real-time announcements.
Axle Weight Limits and Road Restrictions
During the SLR period, maximum allowable axle weights are reduced to prevent damage to vulnerable roadways. The most common weight reductions include:
- 5 Tons per Axle – On posted roads with the highest restrictions.
- 7 Tons per Axle – On state highways and other specified routes.
- 10 Tons per Axle – On designated routes that can support heavier loads.
For detailed information on ton limits and route restrictions, check the MnDOT Seasonal Load Limits Maps Page. On that same page you can also filter your search by zone.
Conclusion:
Minnesota’s Spring Load Restrictions are designed to protect roadways during the spring thaw but can present challenges for carriers and drivers transporting oversized loads. By understanding the state’s seasonal zones, weight limits, and permit requirements, you can stay compliant and avoid costly fines.
