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Frost / spring weight cuts laws by state

People search “Frost / spring weight cuts by state”, “Frost / spring weight cuts laws by state”, and “Frost law map” when a road trip, boat, bike, or load is about to cross a line. This page is the 50-state index for frost / spring weight cuts. Colors and quotes are written for someone in that state today, not for what that state demands of its own registered vehicles.

Open the Frost law difference map

How states differ

Spring-thaw axle and tonnage cuts on non-Interstate roads.

  • Active frost-zone program — big seasonal cuts on posted roads
  • Spring restrictions declared by district, county, or route
  • No routine spring-thaw weight program

Searches this page is meant to answer

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  • Frost / spring weight cuts by state
  • Frost / spring weight cuts laws by state
  • Frost law laws by state
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  • does frost / spring weight cuts change by state
  • frost laws by state
  • spring weight restrictions trucks
  • Michigan frost law
  • Frost / spring weight cuts in California / Texas / Florida / New York
  • is frost / spring weight cuts legal while traveling

All 50 states

One-line traveler summary for each state. Open the map for the quoted rule and footnotes.

Alabama (AL)
Alabama: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Alaska (AK)
Alaska: AKDOT&PF frost / seasonal weight program on non-Interstate routes (17 AAC 25 / AKDOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Arizona (AZ)
Arizona: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Arkansas (AR)
Arkansas: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
California (CA)
California: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Colorado (CO)
Colorado: CDOT spring restrictions on designated mountain and county routes (C.R.S. § 42-4-106 / CDOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Connecticut (CT)
Connecticut: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Delaware (DE)
Delaware: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Florida (FL)
Florida: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Georgia (GA)
Georgia: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Hawaii (HI)
Hawaii: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Idaho (ID)
Idaho: ITD spring restrictions declared by district and route (Idaho Code § 49-1010 / ITD SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Illinois (IL)
Illinois: IDOT spring posting by district and county — no single statewide date; Interstates stay at full 80,000 lb (625 ILCS 5/15-316 / IDOT spring posting). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Indiana (IN)
Indiana: INDOT / county spring restrictions by district (Ind. Code § 9-20-1-3 / INDOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Iowa (IA)
Iowa: Iowa DOT embargo / spring restrictions by county and route (Iowa Code § 321.471 / Iowa DOT embargo). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Kansas (KS)
Kansas: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Kentucky (KY)
Kentucky: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Louisiana (LA)
Louisiana: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Maine (ME)
Maine: MaineDOT posted-road / mud-season program (29-A M.R.S. § 2395 / MaineDOT posted roads). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Maryland (MD)
Maryland: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Massachusetts (MA)
Massachusetts: MassDOT / municipal posted-road thaw restrictions (Mass. Gen. Laws ch. 85, § 30 / MassDOT posted). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Michigan (MI)
Michigan: MDOT frost laws — posted seasonal routes cut axle weight 25–35% and some add a 35 mph truck cap (MCL 257.722 / MDOT frost laws). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Minnesota (MN)
Minnesota: MnDOT spring load restrictions — posted county and state roads, not the Interstate mainline (Minn. Stat. § 169.87 / MnDOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Mississippi (MS)
Mississippi: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Missouri (MO)
Missouri: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Montana (MT)
Montana: MDT spring restrictions declared by district and route (Mont. Code § 61-10-128 / MDT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Nebraska (NE)
Nebraska: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Nevada (NV)
Nevada: NDOT spring restrictions on designated high-country routes (NRS 484D.700 / NDOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
New Hampshire (NH)
New Hampshire: NHDOT posted-road / thaw restrictions by district (N.H. Rev. Stat. § 231:191 / NHDOT posted). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
New Jersey (NJ)
New Jersey: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
New Mexico (NM)
New Mexico: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
New York (NY)
New York: NYSDOT seasonal restrictions declared by region and county (N.Y. Veh. & Traf. Law § 385 / NYSDOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
North Carolina (NC)
North Carolina: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
North Dakota (ND)
North Dakota: NDDOT spring load restriction — posted state and county roads (N.D. Cent. Code § 39-12-03 / NDDOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Ohio (OH)
Ohio: ODOT / county spring restrictions by district (Ohio Rev. Code § 5577.07 / ODOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Oklahoma (OK)
Oklahoma: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Oregon (OR)
Oregon: ODOT spring restrictions declared by district and route (Or. Rev. Stat. § 818.030 / ODOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Pennsylvania (PA)
Pennsylvania: PennDOT seasonal restrictions by district and posted township roads (75 Pa.C.S. § 4902 / PennDOT posted). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Rhode Island (RI)
Rhode Island: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
South Carolina (SC)
South Carolina: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
South Dakota (SD)
South Dakota: SDDOT spring load restriction — posted state and county roads (S.D. Codified Laws § 32-22-24 / SDDOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Tennessee (TN)
Tennessee: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Texas (TX)
Texas: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Utah (UT)
Utah: UDOT spring restrictions on designated canyon and county routes (Utah Code § 72-7-404 / UDOT seasonal). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Vermont (VT)
Vermont: VTrans mud-season / posted-road program (23 V.S.A. § 1392 / VTrans posted roads). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Virginia (VA)
Virginia: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Washington (WA)
Washington: WSDOT spring restrictions on designated non-Interstate routes (RCW 46.44.080 / WSDOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
West Virginia (WV)
West Virginia: no published statewide spring-thaw frost-law program. Honor any posted bridge or construction weight limit.
Wisconsin (WI)
Wisconsin: WisDOT spring load restrictions — posted Class II / seasonal routes (Wis. Stat. § 348.15 / WisDOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.
Wyoming (WY)
Wyoming: WYDOT spring restrictions declared by district (Wyo. Stat. § 31-18-802 / WYDOT SLR). Interstates stay at full 80,000 lb; the last-mile county road is where a legal interstate load becomes illegal.

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Not legal advice. Confirm statutes before you travel. Disclaimer.