Idaho frost law restrictions 2021.



2021 Idaho winter frost/spring thaw laws and seasonal weight restrictions.

During the spring months when warmer temperatures cause the road surface to break up and generally deteriorate, the highways most affected are restricted to lower axle weights and speed restrictions.
The District will sign and mark affected state highways the day before the weight and/ or speed restrictions are in effect. The weight and/or
speed restrictions will be enforced the day after the Districts sign and mark the state highway.
On those sections of highways which are posted for legal weight, or to less than legal weight, trucks and buses weighing 10,000 pounds or
more will be restricted to 30 mph in critical areas. Speed zones will be marked with red and yellow markers. A red marker will mean speed
is restricted to 30 mph and a yellow marker will mean that legal speed can be resumed.
For information on operating restrictions for state highways posted for spring breakup limits or to check on a route of travel for construction
restrictions etc., go to 511.Idaho.gov and the trucking page.
It is important for the trucking industry to cooperate and comply with the load and speed limits. If compliance with the load and speed limits
are adhered to, the need for future, more restrictive, limits may be alleviated. Excessive violations may lead to the implementation of more
restrictive limits.

Live map.

This is a excellent reference and resource point for Idaho chain laws and basic seasonal weight restriction information.

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

 

Montana frost law restrictions.

2021 Montana winter frost/spring thaw laws and seasonal weight restrictions.

Typically seasonal weight restrictions start in December. However, you will need to check with the Montana DOT first if considering travel during the winter months. You can phone them: (406)444-6372 or visit their website for live information: https://www.mdt.mt.gov/travinfo/restrictions.shtml

2021 policy update: load and speed limit.
Special winter permits.

Weight restrictions.

The load limit of any single axle is 8 tons. On any tandem axles is 16 tons or 400 lbs. per inch width of the tire. No single axle may exceed 16,000 lbs. No tandem axles may exceed 32,000 pounds.

Front axle: 600 pounds per inch width of tire will be allowed regardless of the seasonal load limit in effect.

Current closures.

https://www.mdt.mt.gov/travinfo/alerts.shtml

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions

New York frost law restrictions.

2021 New York winter frost/spring thaw laws and seasonal weight restrictions.

Our research has turned up very little about New York state frost and thaw laws. Since a special permit is required in order to move a shipment the NYDOT determines the required route or denies the request until a later date. This makes projection for logistics providers difficult. However you may wish to visit their website: https://www.dot.ny.gov/nypermits/special-hauling-permits

Overweight restrictions.

We strongly suggest contacting them via phone:

Central Office 50 Wolf Road, 1st floor, Albany, NY 12232 (888) 783-1685
Region 2 207 Genesee Street, Utica, NY 13501-2869 (315) 793-2356
Region 3 333 E. Washington Street, Syracuse, NY 13202-1466 (315) 428-4388
Region 4 1530 Jefferson Road, Rochester, NY 14623-3161 (585) 272-3470
Region 5 100 Seneca Street, Buffalo, NY 14203-3088 (716) 847-3271
Region 6 107 Broadway, Hornell, NY 14843 (607) 324-8514
Region 7 317 Washington Street, Watertown, NY 13601-3784 (315) 785-2325
Region 8 4 Burnett Blvd., Poughkeepsie, NY 12603-2594 (845) 437-3331
Region 9 44 Hawley Street, Binghamton, NY 13901-3200 (607) 721-8082
Region 10 Veteran’s Highway, Hauppauge, NY 11787-5518 (631) 952-6020

Oversize restrictions.

There are no restrictions (we are aware of) for oversize loads during the winter and spring thaw months. This is not to suggest that no maximums will be imposed at any given time. Be sure to check with the NY DOT load permitting office for clarification if you plan on transporting a oversize object during the winter and spring seasons.

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

 

Nevada frost law restrictions.

2021 Nevada winter frost/spring thaw laws and seasonal weight restrictions.

Nevada weight restrictions go into effect February 1st and typically last until April 1st. However they are subject to change each year.

Overweight restrictions.

NV-frost-thaw

Nevada frost/thaw map courtesy of NDOT. Click to enlarge.

Seasonal weight restrictions are noted on the above map. For additional information use the link below. General overweight restrictions also apply. Additional permit information is located on the official NDOT website.

Oversize restrictions.

Our research has shown there are no published over dimensional seasonal restrictions. This does not mean they can not be imposed. Carriers should contact the Nevada DOT permit office located in Carson City: 800-552-2127 or direct at: (775) 888-7410. You can also email them questions: OverDimensionalVehiclePermitsOffice@dot.nv.gov

Additional information can be obtained by visiting the Nevada DOT site.

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions

2021 frost winter frost laws, thaw laws and weight restrictions.

2021 frost laws, thaw laws and seasonal weight restrictions.

Frost/thaw damages to surface.

Frost/thaw damages to surface.

Learn the details of the winter frost laws, spring thaw laws and seasonal weight restrictions. Details for the USA and Canada by State/Province. Many areas incorporate temporary special weight limits and restrictions (frost or thaw laws) during the winter and spring months of the year. These temporary restrictions are usually referred to as “frost laws” or “thaw laws” and implemented typically during the month or March and April. In some Northern States and Provinces frost laws can still be in effect in July as it’s much colder in the North. Since these restrictions are implemented on a “as needed” basis it is possible many of the official government websites may not have published this temporary restriction in a convenient place as frost laws are also subject to change at any moment based on the temperature of the roads core. You want to be certain to check with the appropriate officials to verify the latest changes in the laws.

2021 United States: Restrictions on winter and spring seasonal weight laws.

Idaho   Iowa   Maine   Michigan   Minnesota    Montana   Nevada    New Hampshire    New York   North Dakota  Pennsylvania    South Dakota    Vermont   Washington    Wisconsin    Wyoming

2021 Canada: Restrictions on winter and spring seasonal weight laws.

Alberta   British Columbia   Manitoba   New Brunswick New Foundland & Labrador  Nova Scotia  Nunavut  Ontario    Prince Edward Island   Quebec    Saskatchewan

Why we have these laws and must protect our roads and highways.

In order to keep the trucking industry operating the Northern US states and Canadian provinces rely on engineers and scientific data to determine which dates frost laws will be in effect. With fairly recent advances in science and technology, data is much more reliable. This helps with the implementation of “Frost Laws” or “Seasonal Weight Restrictions” ensuring they are not implemented to early or late. While no State or Province desires to delay the transportation of goods through their territory it is imperative public assets are protected.

In areas that constantly get negative (ie: -10 below zero) temperatures the amount of damages has forced Northern US States as well as Canadian Provinces to create and enact laws that restrict vehicle weights during the spring and winter months (specifically trucking companies) when the roads and bridges are thawing out. There are all kinds of things that can go wrong with different types of roads and pavements. For example the State of Michigan has implemented permanent frost laws that go into effect during the months of March through May (and in some cases even June). Some routes require legal axle weight limits be decreased by as much as 35%. Some areas and local governments may also limit heavy-haul vehicle speeds to a maximum of 35 miles per hour during frost/thaw law months regardless of posted limits.

Oregon hwy. US 1. Photo courtesy of KDRV.com

One of many examples is in Southern Oregon on old US Highway 1 (which follows the coast line from Mexico to Canada) the road is as much as 16 feet thick as years of pavement (even bricks) has been laid down year after year since the early 1900’s. It should be noted that today’s technology is able to provide us with roads that are flexible due to the engineering of the construction process and the materials used. Excessive weight exerted by overloaded axles (or a weakened supporting base) can cause the pavement to bend or deform. The strength of the road combined with its resistance to bending determines the amount of weight the roadway can handle.

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

New Hampshire frost law restrictions.

2021 New Hampshire winter frost/spring thaw laws and seasonal weight restrictions.

The maximum allowable vehicular weight posted sections of State highways is 30,000 pounds gross weight, or the cumulative width in inches of all tires contacting the road surface multiplied by 300, whichever is less.

trucks carrying home heating oil, processed milk products, maple sap, and septic pumper trucks are exempted from seasonal bans with the approval of NHDOT District Engineers.

Over weight restrictions.

You can view which current roads are effected by spring thaw weight restrictions: https://nhdotpermits.org/SpringThawRestrictionsViewer.aspx

 

Here is a handy tool used to determine frost and thaw conditions:

http://www.nrcc.cornell.edu/industry/roads/

https://www.nhmunicipal.org/town-city-article/springtime-thaw-new-tools-help-local-decision-makers-during-mud-season

Oversize restrictions.

We are currently not aware of any oversize restrictions during the spring thaw months. However this does not mean certain routes may not have oversize restrictions imposed. Be sure to contact the New Hampshire DOT during the winter months for more information; 603-227-4110

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

 

Michigan frost law restrictions.

2021 Michigan winter frost/spring thaw laws and seasonal weight restrictions.

Frost/thaw laws usually go into effect by February. However in many years they have been placed into effect earlier. Use the information and links below for live clarification.

Active permit restriction bulletins.

https://mdotjboss.state.mi.us/APSWB/APBHome.htm?bulletin=active

 

Spring weight restriction bulletins.

https://mdotjboss.state.mi.us/APSWB/searchBySpringWeight.htm?year=2021

Overweight shipments.

No shipment overweight (no matter what axle configuration) is permitted to travel during the spring thaw. It should also be noted some shipments may be required to reduce load weights by 25-35% on state roads during the spring thaw months. If your have more than 11 axles total you will not be permitted to leave or enter Michigan during the spring thaw months.

Oversize shipments.

Any shipment in excess of 14′ in width is not permitted to travel during the spring thaw months.

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

Iowa frost law restrictions 2021.

2021 Iowa frost laws, seasonal load weight and restrictions.

 

In previous years the general rule seasonal restrictions typically begin around March 15th each year in Iowa. By no means consider this legal advice. Be sure to consult with the Iowa DOT before attempting to travel.

 

Current Iowa route restrictions by Iowa counties map.

Iowa DOT office: 515-237-3264

For more information about Iowa regulations and restrictions try our “Trucking regulations” link below.

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

 

North Dakota frost law restrictions

2020 North Dakota winter frost/spring thaw laws and seasonal weight restrictions.

The North Dakota winter frost and spring thaw laws – seasonal weight restrictions. Seasonal weight restrictions are needed to protect the roads and highways during the winter months (usually between November 1 and April 1 each year but can extend towards the end of May) from being damaged by transporting heavy weights over them. While some of them are closed others remain open with weight limits significantly reduced in order to prevent damages. North Dakota implements protective measures to protect their infrastructure – and for a good reason.

North-Dakota-frost-thaw-map

Example of North Dakota frost and thaw law notification map for active months. Click to view their live version.

Make sure you’re educated on why the restrictions exist.

In most of North Dakota the colder winter temperatures cause the ground to freeze and become brittle. However, the earth underneath it is warmer and typically does not freeze so water exists in the roads aggregate when temperatures are frozen but not in the minus for long periods of time. What this does when large weights are transported over it is causes stress cracks and even buckling. These cracks lead to the deterioration of the road and eventually cause pot-holes as the ambient temperatures rise below thus expanding and pushing upward. The asphalt is then completely separated and a pot hole is created.

North Dakota spring thaw laws.

This is where any damages from driving over the roads during the winter frost months becomes evident. As the outside ambient temperature begins to rise so does the earths core. Since the asphalt is dense it takes it longer to thaw out. This is where buckling starts to take place as the warm earth expands and puts pressure on the asphalt to move upwards. This upward force causes the road to either buckle or pot holes start to develop from the millions of cracks that were created ultimately causing the public property to require maintenance which is a huge burden to the state and tax payers.

So North Dakota implements travel restrictions to prevent this.

With changing temperatures and built-up moisture in the pavement, roads are weakened as spring begins. Putting extra weight on the roads during this critical time can lead to even more issues. To prevent excessive damage to roads and highways, many states have enacted frost laws that go into effect during the early months of spring. These laws are designed to help protect the roads in areas with frigid winters.

Frost laws require that large vehicles carry a reduced load while driving on any posted or restricted roads. Also, heavy vehicles must lower their speed as the change in seasons takes place. This helps to cut down on the road damage that occurs as spring arrives each year

 

LoadPassPermits.com is the notification system for North Dakota road closures.

North Dakota frost law Notification system and travel map.

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Federal bridge formula.
Exemptions from seasonal restrictions.

 

Quebec Frost Laws

2020 Quebec frost – thaw laws, seasonal load weight and speed restrictions.

Frost and thaw laws.

 

 

According to the Ministry of Transportation, spring thaw restrictions are:

Official and target dates for 2020

As of April 26th the last updates were:

Zone 1 (official dates)

  • From Monday, March 25 (00:01) to Friday, May 24 (23:59)

Zone 2 (official dates)

  • From Monday, April 1 (00:01) to Friday, May 31 (23:59)

Zone 3

  • From Monday, April 15 (00: 01) to Friday, June 14 (23:59)

Please note that the target dates represent the most likely start and end dates of the thaw period for each of the three zones. Depending on the changes in weather conditions, these dates may be moved ahead or postponed.

For most recent info check https://www.transports.gouv.qc.ca/en/camionnage/degel-periode-restrictions-charges/Pages/periode-degel.aspx

For restrictions refer to “Québec Vehicle Load and Size Limits Regulation – Highway Safety Code”

E.g. The load limit of an axle or combination of axles, in a normal period or in a period of thaw or rain, belonging to a class in Schedule B is as follows: http://legisquebec.gouv.qc.ca/en/ShowDoc/cr/C-24.2%2c%20r.%2031?langCont=en#se:14

 

See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Trucking regulations in Quebec.
Federal bridge formula.