Spring Thaw & Seasonal Weight Restrictions

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• AlabamaNo verified coverage yet Share an official source →
• AlaskaStatus unknown — check the state Official source ↗
  Source details

  Break-up restrictions are issued regionally by DOT&PF. The season is later and longer than any lower-48 state, which is why this row has its own window rather than sharing the northern-tier default.

  Read 6 day(s) ago (2026-11-08). The document states no date of its own.

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• AlbertaNo verified coverage yet Share an official source →
• ArizonaNo verified coverage yet Share an official source →
• ArkansasNo verified coverage yet Share an official source →
• British ColumbiaNo verified coverage yet Share an official source →
• CaliforniaNo verified coverage yet Share an official source →
• ColoradoNo seasonal programme Official source ↗
  Source details

  CDOT runs no spring thaw weight programme. Colorado closes and chain-controls mountain routes in winter, which is a traction and closure question, not an axle-weight one.

  We hold no current reading of this source.

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• ConnecticutNo verified coverage yet Share an official source →
• DelawareNo verified coverage yet Share an official source →
• District of ColumbiaNo verified coverage yet Share an official source →
• FloridaNo verified coverage yet Share an official source →
• GeorgiaNo verified coverage yet Share an official source →
• HawaiiNo verified coverage yet Share an official source →
• IdahoStatus unknown — check the state Official source ↗
  Source details

  Idaho publishes restrictions through the 511 traveller map. There is no bulletin document to cite, so we watch the page and link to it.

  Read 6 day(s) ago (2026-11-08). The document states no date of its own.

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• IllinoisLocal roads only Official source ↗
  Source details

  IDOT does not post spring weight restrictions on state highways. Illinois seasonal limits are set by county and township highway commissioners on local roads.

  We hold no current reading of this source.

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• IndianaLocal roads only Official source ↗
  Source details

  INDOT does not seasonally restrict the state highway system. Indiana frost laws are posted by county highway departments on county roads.

  We hold no current reading of this source.

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• IowaNo verified coverage yet Share an official source →
• KansasNo verified coverage yet Share an official source →
• KentuckyNo verified coverage yet Share an official source →
• LouisianaNo verified coverage yet Share an official source →
• MaineStatus unknown — check the state Official source ↗
  Source details

  Maine calls these posted roads rather than frost laws. The list covers state and state-aid highways and is republished as roads are added and released.

  Read 34 day(s) ago (2026-10-11). The document states no date of its own. Last attempt failed: HTTP 403 from Maine Department of Transportation

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• ManitobaNo verified coverage yet Share an official source →
• MarylandNo verified coverage yet Share an official source →
• MassachusettsNo verified coverage yet Share an official source →
• MichiganNo restriction in force Official source ↗
  Source details

  Restrictions apply to routes marked "Seasonal" on the MDOT Truck Operators Map — a 25% axle-weight reduction on rigid pavement and 35% on flexible. Which pavement a given mile is, is a property of the road, not of the state, so we never compute the reduction ourselves.

  Read 2 day(s) ago (2026-11-12). The document itself is dated 2026-05-15.

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• MinnesotaNo restriction in force Official source ↗
  Source details

  Six frost zones, each with a published start and end date. MnDOT announces changes at least three days ahead, which is what makes a several-hour poll comfortably fast enough.

  Read 2 day(s) ago (2026-11-12). The document states no date of its own.

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• MississippiNo verified coverage yet Share an official source →
• MissouriLocal roads only Official source ↗
  Source details

  MoDOT runs no annual spring thaw programme. Missouri restrictions are local and episodic; MoDOT publishes any exceptional embargo on its motor-carrier notices page, which is the page linked here.

  We hold no current reading of this source.

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• MontanaStatus unknown — check the state Official source ↗
  Source details

  Published through the statewide travel-information map rather than as a bulletin, so we link to it and watch it for change rather than claiming a parsed limit.

  Read 5 day(s) ago (2026-11-09). The document states no date of its own.

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• NebraskaStatus unknown — check the state Official source ↗
  Source details

  Restrictions are announced through the NDOT truck-permit pages rather than as a numbered bulletin series.

  Read 6 day(s) ago (2026-11-08). The document states no date of its own.

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• NevadaNo verified coverage yet Share an official source →
• New BrunswickNo verified coverage yet Share an official source →
• New HampshireNo verified coverage yet Share an official source →
• New JerseyNo seasonal programme Official source ↗
  Source details

  No spring thaw weight programme. New Jersey does not reach the sustained frost depth the northern tier restricts for.

  We hold no current reading of this source.

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• New MexicoNo verified coverage yet Share an official source →
• New YorkLocal roads only Official source ↗
  Source details

  NYSDOT does not seasonally restrict the touring routes. New York frost laws are posted by towns and counties on local roads, typically for a few weeks in March and April.

  We hold no current reading of this source.

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• Newfoundland and LabradorNo verified coverage yet Share an official source →
• North CarolinaNo verified coverage yet Share an official source →
• North Dakota4 restrictions in force Official source ↗
  Source details

  NDDOT publishes every restricted segment as GeoJSON with the order number, its effective time and the ton limit. This is the one state where we hold segment-level detail.

  Read 2 day(s) ago (2026-11-12). The document itself is dated 2026-06-24.

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• Northwest TerritoriesNo verified coverage yet Share an official source →
• Nova ScotiaNo verified coverage yet Share an official source →
• NunavutNo verified coverage yet Share an official source →
• OhioLocal roads only Official source ↗
  Source details

  ODOT does not impose spring weight restrictions on the state highway system. Ohio frost laws are posted by county engineers and township trustees on local roads, road by road, with no statewide list. Check the county engineer for the specific local roads on your route.

  We hold no current reading of this source.

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• OklahomaNo verified coverage yet Share an official source →
• OntarioNo verified coverage yet Share an official source →
• OregonNo verified coverage yet Share an official source →
• PennsylvaniaLocal roads only Official source ↗
  Source details

  Pennsylvania regulates weak roads through YEAR-ROUND posting and bonding, not through a spring thaw season. A posted-and-bonded road is restricted in July as well as in March, so it is a routing question rather than a seasonal one.

  We hold no current reading of this source.

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• Prince Edward IslandNo verified coverage yet Share an official source →
• QuebecNo verified coverage yet Share an official source →
• Rhode IslandNo verified coverage yet Share an official source →
• SaskatchewanNo verified coverage yet Share an official source →
• South CarolinaNo verified coverage yet Share an official source →
• South DakotaStatus unknown — check the state Official source ↗
  Source details

  SDDOT sets and lifts restrictions from accumulated freeze/thaw indices and field observation, and announces each change by press release and on this page.

  Read 5 day(s) ago (2026-11-09). The document states no date of its own.

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• TennesseeNo verified coverage yet Share an official source →
• TexasNo verified coverage yet Share an official source →
• UtahNo verified coverage yet Share an official source →
• VermontNo verified coverage yet Share an official source →
• VirginiaNo seasonal programme Official source ↗
  Source details

  No spring thaw weight programme on the state system.

  We hold no current reading of this source.

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• WashingtonStatus unknown — check the state Official source ↗
  Source details

  Washington is one of the 21 states this engine already prices permits for, so a restriction here can change a quote we issue. The feed is a typed JSON API and carries a start and end date per restriction.

  We hold no current reading of this source.

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• West VirginiaNo verified coverage yet Share an official source →
• WisconsinStatus unknown — check the state Official source ↗
  Source details

  Zone-based Class II restrictions of 6 tons single / 10 tons tandem, 24 tons gross. Announced by zone, and the same page also carries the frozen-road law, which moves in the opposite direction.

  Read 6 day(s) ago (2026-11-08). The document states no date of its own.

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• WyomingStatus unknown — check the state Official source ↗
  Source details

  Published on the statewide road-conditions map. Wyoming restricts fewer miles than its neighbours because much of the state system is built on free-draining base.

  Read 6 day(s) ago (2026-11-08). The document states no date of its own.

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• YukonNo verified coverage yet Share an official source →

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