North Dakota frost law restrictions

2019-2020 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.

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.

 

Saskatchewan Frost Laws

2020 Saskatchewan winter frost/spring that laws and seasonal weight restrictions.

The winter/spring season frost law restrictions will again be in in effect for many roadways in the Province of Saskatchewan this year according to information provided by the the provincial Ministry of Highways and Infrastructure. Typically, seasonal (spring) frost law restrictions that take effect in March.

Spring load restrictions on affected highways: The maximum load on steering axles is 10 kg per millimeter (560 lbs. per inch) width of tire (manufacturer’s stamped dimensions), to a maximum of 3 000 kg (6,612 lbs.) on each wheel but to a maximum of 5,500 kg (12 120 lbs.) on the steering axle; except for straight trucks on primary highways which are allowed up to a maximum of 7,250 kg (15,983 lbs.) on the steering axle with the appropriate tire size.

Maximum loads on all other wheels will be limited to 6.25 kg/mm (350 lbs. per inch) width of tire to a maximum loading of 1,650 kg per wheel (3,636 lbs.)

Maximum gross axle weights and tire sizes.

Colder temperatures during the winter months help freeze and strengthen roads. As a result more weight can be transported on provincial highways without damaging the road. This is a benefit to the trucking community.

The winter weight period that allows additional weight typically runs from November 16 through March 14. However, if weather remains mild the program may be postponed because without sufficient freezing, extra weight can damage pavement and the road beneath.

Winter Weights will not apply in the southwest area of the province until December 1 and will be removed on the last day of February due to historically milder climatic conditions.

Municipal roads are the responsibility of each rural municipality, who can set out their own weight limits. Weights can be restricted at any time by Minister’s order.

Saskatchewan is a large province with considerable difference in climate in the north and the south. The new change takes into account the climatic differences in the north and the south of the province while also maintaining the original intent of providing primary weight access for economic activities. In the north of the province, the annual weight increase on the 9-month primary highways will be same as before, from July 1 to March 31 of the following year. In the south of the province, the annual weight increase on the 9-month primary highways will occur earlier, from June 15 to March 15 of the following year. This change will help to sustain road conditions in the south, where spring thaw occurs earlier.

Additional information can be obtained by contacting the inquiry line: 1-866-933-5290 in Saskatchewan or 306-933-5290 outside the province.

Source: Spring Road Restrictions: https://www.saskatchewan.ca/business/transportation-and-road-construction/information-for-truckers-and-commercial-trucking-companies/regulations-and-road-restrictions/increased-weights-and-road-restrictions

Government of Saskatchewan, winter weight restrictions and spring frost law road bans and interactive road map:

http://publications.saskatchewan.ca/api/v1/products/87911/formats/104609/download

http://hotline.gov.sk.ca/restrictions_map.html

 

See also:

 

Please share your comments or suggestions with others below.

 

Prince Edward Island Frost Laws

2020 Prince Edward Island winter frost/spring thaw laws and seasonal weight restrictions.

Spring frost laws and weight restrictions for Island roads will begin at 12:01 a.m. on Friday, March 15, 2020.

Frost/thaw law for PEI.

For Prince Edward Island all weather roads, such as routes 1 and 2: Vehicles may carry up to their maximum allowable weight with no overweight exceptions permitted. Other roads: Vehicles may carry 75 percent of their maximum allowable weight during frost law (thaw law) season. Only the road’s posted weight limit is permitted and if the laws are not observed a fine may be levied.

It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the Prince Edward Island posted frost laws, seasonal load weight and speed restrictions that are posted. Changes to these restrictions is subject to change hourly during the winter and spring months. You are expected to be aware of these changes and operate accordingly. It is possible that heavy fines may be levied as well as your truck being ordered out of service and not permitted to travel. We suggest you bookmark this page for future reference.

Seasonal weight restrictions limit the maximum weight of vehicles allowed to travel on certain roads as a way to help prevent damage and protect investment in the roadways.

Late winter and early spring driving in this province has its own set of challenges. Previously frozen roads become more vulnerable to damage as they thaw out and soften. Heavy vehicles travelling over paved roads can make it worse by causing the pavement to crack and break up.

What is frost law and why are they necessary?

When pavement thaws during the daytime and freezes at night it is potentially damaging to the road. In order to prevent this “frost laws” are implemented in order to prevent costly damages to the road.

How are roads damaged by frost thawing or the road freezing?

Water from melted ice and snow seeps into cracks in the pavement and softens the gravel underneath. When the water beneath the surface freezes again, it expands and breaks the pavement, causing potholes. If ice continues to form under the pavement from a steady supply of water, it can push the entire surface of the road upward causing the washboard like unevenness (ripple) known as “frost heaving.” These damages are permanent and costly to repair.

Why are Prince Edward Island roads more vulnerable to seasonal damage?

Prince Edward Island consists of a high concentration of silty soil which collects and holds more water beneath the roadway surfaces, making the roads more susceptible to frost heaving and potholes despite any drainage measures that have been put into place.

What are the classifications of roads under weight restrictions?

  • All-weather roads, such as routes 1 and 2: Vehicles may carry up to their maximum allowable weight – with no overweight exceptions permitted.
  • Other roads: Vehicles may carry 75 percent of their maximum allowable weight.
  • Posted weight limits: Only the road’s posted weight limit is allowed.

Contact information:

Department of Transportation, Infrastructure and Energy
3rd Floor, Jones Building
11 Kent Street,
P.O. Box 2000,
Charlottetown, PE C1A 7N8

Phone: 902-368-5100
Fax: 902-368-5395

If you have questions about the frost/thaw laws as well as any other road related inquiries send a e-mail to: roads@gov.pe.ca

Prince Edward Island seasonal weight restrictions:

https://www.princeedwardisland.ca/en/information/transportation-infrastructure-and-energy/seasonal-weight-restrictions

See also:

Please share your knowledge with others by commenting below:

Ontario Frost Laws

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

Frost - thaw laws Ontario.

Restrictions during winter frost and spring thaw law months.

All annual and project heavy haul trucking permits are not valid on any highways unless otherwise specified on the permit during frost or thaw months:

  • March and April in Southern Ontario
  • March, April and May in Northern Ontario

For the purposes of this restriction the Province of Ontario is divided, west to east, by:

  • A line formed by the Severn River to Regional Rd. 169
  • Regional Rd. 169 from Washago to Hwy. 12
  • Hwy. 12, from Regional Rd. 169 to Hwy. 7, north of Sunderland
  • Hwy. 7, from Hwy. 12 to Regional Rd. 7B at Carleton Place
  • Regional Rd. 7B to Hwy. 15
  • Regional Rd. 29 to Arnprior

Single trip permits for transporting heavy haul shipments on highways not designated in Schedules 1, 2 and 3, may be issued but are subject to axle weight controls established by the Ministry of Transportation.

Pursuant to The Highway Traffic Act, the Ontario Ministry of Transportation will impose reduced load weight limits for designated parts of the provincial highways between March 1 and April 30, for Schedule 1 and Schedule 2 roadways, and from March 1 to June 30 for Schedule 3 roadways.

Spring frost/thaw law weight maximums (restrictions) for Ontario:

Reduced loads.

Schedule 1.

Pursuant to the Highway Traffic Act, the ministry will impose reduced load limits for those designated parts of the King’s Highways listed in Schedule 1, when appropriate, between March 1, 2020 to April 30, 2020: Verification.

Schedule 2.

Pursuant to the Highway Traffic Act, the ministry will impose reduced load limits for those designated parts of the King’s Highways listed in Schedule 2, when appropriate, between March 1, 2020 to May 31, 2020.

When signs are posted, the following Highways will have a Reduced Load Limit for their ENTIRE length: Verification.

Schedule 3.

Pursuant to the Highway Traffic Act, the ministry will impose reduced load limits for those designated parts of the King’s Highways/Roads listed in Schedule 3, when appropriate, between March 1, 2019 to June 30, 2019.

When signs are posted, the Highway/Roads within the following Territories will have a Reduced Load Limit: Verification.

Source: http://www.mto.gov.on.ca/english/trucks/load-restrictions.shtml

It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the Ontario posted frost/thaw laws and seasonal weight restrictions. Changes to these restrictions is subject to change hourly during the winter and spring months. You are expected to be aware of these changes and operate accordingly. It is possible that heavy fines may be levied as well as your truck being ordered out of service and not permitted to travel. We suggest you bookmark this page for future reference.

Seasonal weight restrictions limit the maximum weight of vehicles allowed to travel on certain roads as a way to help prevent damages to public assets and protect public investment in the roadways.

Please share your knowledge with others by commenting below:

New Brunswick frost laws

2020 New Brunswick winter frost/spring thaw laws and seasonal weight restrictions.

It should be noted New Brunswick has not updated their official spring weight restrictions page governing the winter frost and spring thaw laws since the winter of 2017. What this tells us is the information they last published seems to be working for them now so there’s no need to update it. If you wish to verify this by speaking with them personally you can call Shawn Berry the communications official for the New Brunswick Department of Transportation and Infrastructure 506-453-5634.

 

 

See also:

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

Manitoba Frost Laws

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

Manitoba Spring Road Restrictions (SRR) program.

The Manitoba Ministry of Infrastructure divides its province into three sections, with each section having a unique thaw restriction start and end date. In 2020, it will begin its spring road restrictions for Region A and Region B of the province at 6 a.m. on Friday, March 10. Weight restrictions are scheduled to end at 11:59 p.m. on Wednesday, May 31.

The allowable axle weights on weight restricted roads during the spring season are based on the percentages of the legal axle weights, with some exceptions for the single steer axles and in situations where essential commodities are being shipped. There are two levels of spring weight restrictions in Manitoba depending on the strength and surface conditions of the pavement structures. The Level 1 weight restriction applies to weak pavements while the Level 2 weight restriction applies to very weak pavements. The allowable axle weights on different axle configurations are calculated as follows:

Level 1 Spring Weight Restrictions:

  1. On a single steering axle of a single or tandem drive truck tractor:
    • 10 kg per millimeter width of tire up to a maximum of 5,500 kg on all highways.
  2. On a single steering axle of a straight truck or a tridem drive truck tractor:
    • Tire size 305 mm or less: 10 kg per millimeter width of tire up to a maximum of 5,500 kg on all highways.
    • Tire size greater than 305 mm: 9 kg per millimeter width of tire up to a maximum of 6,570 kg on all highways.
  3. On a tandem steering axle group of a straight truck:
    • 9 kg per mm width of tire multiplied by 0.90 (download factor) up to a maximum of 12,240 kg on RTAC Routes or Class A1 highways and up to a maximum of 9,900 kg on Class B1 highways.
  4. On all other axle groups:
    • 9 kg per millimetre width of tire up to a maximum of 90% of the legal axle group weights on all highways.

Level 2 Spring Weight Restrictions:

  1. On all single steering axles of all vehicle configurations:
    • 6.5 kg per millimeter width of tire up to a maximum of 65% of the legal axle weights on Class A1 and Class B1 highways.
  2. On a tandem steering axle of a straight truck:
    • 6.5 kg per millimeter width of tire multiplied by 0.90 (download factor) up to a maximum of 8,840 kg on Class A1 highways and up to a maximum of 7,150 kg on Class B1 highways.
  3. On all other axle groups:
    • 6.5 kg per millimeter width of tire up to a maximum of 65% of the legal axle weights on Class A1 and Class B1 highways.

Road restrictions for Region C, the northern most regions, will begin at 6 a.m. on Sunday, March 12, and end at 11:59 p.m. on Saturday, June 10. Region C is defined as the rest of the province north of the virtual line in Region B.

Spring Weight Restrictions are classified as Level 1 and Level 2 (see table below).

 

Example of Maximum Allowable Axle Weights. Level 1 Spring Weight Restriction, Reduce Axle Weights to 90% Maximum Allowable Weights. Level 2 Spring Weight Restriction, Reduce Axle Weights to 65% Maximum Allowable Weights. A complete list of Charts of Allowable Axle Weights can be found at the following link: http://gov.mb.ca/mit/srr/restrictions.html

Manitoba Spring Road Restrictions Program:

Source: http://www.gov.mb.ca/mit/srr/

Manitoba publishes a list of road bans as conditions change. Go to the above link and look for “Road Bans” in the left column. These bans identify specific roadways and the ban imposed in percent of rated axle capacity.

It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the Manitoba posted frost laws, seasonal load weight and speed restrictions that are posted. Changes to these restrictions is subject to change hourly during the winter and spring months. You are expected to be aware of these changes and operate accordingly. It is possible that heavy fines may be levied as well as your truck being ordered out of service and not permitted to travel. We suggest you bookmark this page for future reference.

Seasonal weight restrictions limit the maximum weight of vehicles allowed to travel on certain roads as a way to help prevent damage and protect public investment in the roadways.

Please share your knowledge with others by commenting below:

British Columbia Frost Laws

2020 British Columbia winter frost/spring thaw laws and seasonal weight restrictions.

2020 Seasonal frost and thaw law restrictions.

The British Columbia Ministry of Transportation and Infrastructure maintains an frequently updated database that posts frost law notices and seasonal load restrictions by region. Depending on the region weight restrictions may already be in place while others are scheduled to take place imminently.

NEW: Get on the e-mail notification list to be notified of seasonal load restriction changes for the following areas in British Columbia:

The link below includes an interactive map with links to 28 regions. Each region posts its current road conditions and any weight restrictions imposed. The current map indicates restrictions from “no weight restrictions” to “50%” of rated axle weights restrictions. It also includes access to recently updated load restrictions and road reports. British Columbia is excellent about providing up to date information about their frost laws and when they are in effect. It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the posted frost laws, seasonal load weight and speed restrictions that are posted. Changes to these restrictions is subject to change hourly during the winter and spring months. You are expected to be aware of these changes and operate accordingly. It is possible that heavy fines may be levied as well as your truck being ordered out of service and not permitted to travel. We suggest you bookmark this page for future reference.

  • South Vancouver Island.
  • Central Vancouver Island.
  • North Vancouver Island.
  • Howe Sound,
  • Sunshine Coast.
  • Lower Mainland.
  • Fraser Valley.
  • South Okanagan.
  • Kootenay Boundary.
  • Central Kootenay.
  • East Kootenay.
  • Selkirk.
  • Okanagan-Shuswap.
  • Nicola.
  • Thompson.
  • South Cariboo.
  • Central Cariboo.
  • North Cariboo.
  • Fort George.
  • Robson.
  • South Peace.
  • North Peace.
  • Nechako.
  • Lakes.
  • Bulkley Nass.
  • Skeena.
  • North Coast.
  • Stikine.

 

British Columbia:

http://www.th.gov.bc.ca/roadreports/RRMonitor.aspx

http://www.th.gov.bc.ca/bchighways/loadrestrictions/loadrestrictions.htm

See also:

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

Please share your knowledge with others by commenting below: