Winter Load Increases

Winter Load Increases - Minnesota Statutes
Zone Boundary Descriptions
Cumulative Freezing Index Maps
Cumulative Thawing Index Maps
Frost and Thaw Depth Graphs
County Weight information
Definitions and Criteria for Starting and Ending Dates
Average Starting Date Contour
Average Ending Date Contour
Historical Winter Load Increase Dates

Office of Materials & Road Research • E-mail: MaterialsLab.DOT@state.mn.us • 1400 Gervais Avenue • Maplewood, MN 55109-2044 • Phone: (651) 366-5592 • FAX: (651) 366-5461

Last Updated: Thursday, March 26, 2026 - 2:46:49 p.m. Central Daylight Time