Transportation

Load Allowances

Updated on September 6, 2017

1. SEASONAL LOAD ALLOWANCES 
2. SPECIAL ADVISORY: Buffalo River Bridge (REVISED)
3. SPECIAL ADVISORY: Frank Channel Bridge
4. SPECIAL ADVISORY: Hay River Pine Point Bridge

1. SEASONAL LOAD ALLOWANCES

The ‘winter load tolerance’ allowance gives the trucking industry the opportunity to increase load capacity by 500 kg per axle not including steering axles.  This allowance does not permit for any accumulative overweight on: A-train, B-train, C-train or Super B-train truck and trailer configurations.  The table below gives estimates for the winter load tolerances.

These load allowances will be enforced to best protect and preserve the NWT highway system. The Department of Infrastructure will continue to monitor the spring thaw and will further update on seasonal load allowances.

WINTER LOAD TOLERANCE SPECIFICATIONS WINTER LOAD TOLERANCES WILL BE ALLOWED ON THE FOLLOWING HIGHWAYS
VEHICLE CONFIGURATION GVW, KG WLT, KG HIGHWAY SECTION
Single Axle Straight Truck 16,400 16,900 Hwy 1 Km 0 – Km 690 (excluding Liard & Mackenzie River Crossings)
Tandem Axle Straight Truck 24,300 25,300 Hwy 2 Km 0-49
Tridem Axle Straight Truck 31,300 32,800 Hwy 3 Km 0-338
Straight Truck Combination Full Trailer 53,500 57,000 Hwy 4 Km 0-69
Tandem Axle Semi-Trailer/Truck Tractor 39,500 41,500 Hwy 5 Km 0-266
Tridem Axle Semi-Trailer/Truck Tractor 46,500 49,000 Hwy 6 Km 0-90
A-Train Truck and Trailer 53,500 53,500 Hwy 7 Km 0-254
B-Train Truck and Trailer Combinations 63,500 63,500 Hwy 8 Km 0-272.5
C-Train Truck and Trailer Combinations 58,500 58,500

Seasonal load allowances  

The Department of Infrastructure will enforce these load allowances in order to best protect and preserve the NWT Highway System: 

Highway

Normal Road Conditions

General Notice of 100% Legal Axle Weight

These highway sections are set at 100% of the legal axle weight and until further notice

Special Advisory Notice for 90% Legal Axle Weight

These highway sections are set at 90% of the legal axle weight until further notice

Special Advisory Notice for 75% Legal Axle Weight

These highway sections are set at 75% of the legal axle weight until further notice

Highway 1

Km 0 - 690


 


Highway 2

Km 0 – Km 49


 

 

Highway 3

Km 0 – Km 338


 

 

Highway 4

 

 

Km 0 – Km 69

Highway 5

Km 0 – Km 266

 


 

Highway 6

Km 0 - Km 90



 

Highway 7

Km 0 - Km 254

 


Highway 8 

Km 0 – Km 272.5

 

 

 

Kakisa Access Km 0 – Km 12.9
Hay River Reserve Access Km 0 – Km 14.9

2. SPECIAL ADVISORY:Buffalo River Bridge (Revised)

Located at km 55.7 on the Fort Smith Highway (Highway 5), the bridge is undergoing rehabilitation. During construction from April 3 to October 31, 2017 there will be intermittent road closures for up to 30 minutes. Please observe reduced speed limits within the construction zone, where speeding fines are double.

Vehicles exceeding legal width, height or loading allowances are required to adhere to the pre-approval authorization process at all times.

Thursday, July 20, 2017 (6:00 pm) to October 31, 2017

  • Single lane (up to 3.0 metres wide, 4.5 meters high allowed)
  • No overweight loads will be allowed
  • Lanes will be alternating
  • No wide loads will be allowed

3. SPECIAL ADVISORY:Frank Channel Bridge - Revised

The Department of Transportation is currently contemplating various options for upgrading the Frank Channel Bridge in order to meet current and projected traffic loads.

At this point in time we do not envision any major restrictions on the bridge for 2017. The current legal weight and dimension limits remain in effect.

Department will advise all carriers and the public of any restrictions well in advance.

For more information: Call the “On-line Services” helpline at 1-866-225-3505 Monday to Friday, 9:00 a.m. to 4:00 p.m., or leave a message, or visit our website www.dot.gov.nt.ca/Highways/Allowances.

ADDITIONAL INFORMATION:

Please verify that your vehicle configuration conforms with the loading allowed under the registration documents and to the “Large Vehicle Control Regulations” available here.

Any changes to the Allowable Legal Axle Weight Percentages will be announced 48 hours in advance by the Department on the Public Highway Information Service available toll free at: 1-800-661-0750.

    3. SPECIAL ADVISORY:Hay River Pine Point Bridge Rehabilitation

    Hay River Pine Point Bridge rehabilitation construction will start in April 2018. Construction will take place between April and October each year of 2018 and 2019.  During this period, the following restrictions will apply: 

    Phase 1 Construction -  2018

    From April 1, 2018 to October 31, 2018
    • Single lane – width restriction 3.0 meters (Alternating lanes – No wide loads will be allowed during deck rehabilitation)
    • Height restriction – 4.2 meters
    • No overweight loads allowed
    • Construction zone speed – 15 km /hr
    From November 1, 2018 to  March 31,
    • Double lane
    • Height  restriction – 5.0 meters
    • Permit Vehicles will be assessed
    • Speed limit – 40 km /hr

    Phase 2 Construction - 2019

    From April 1, 2019 to October 31, 2019
    • Single lane – width restriction 3.0 meters (Alternating lanes – No wide loads will be allowed during deck rehabilitation)
    • Height restriction – 4.2 meters
    • No overweight loads allowed
    • Construction zone speed – 15 km /hr
    • One way alternating traffic flow will be managed by traffic signals at each end of the bridge.
    • Flag persons will be used when manual traffic control is required for construction operations and emergency vehicles.
    • Intermittent traffic interruption up to 30 minutes will be required.
    • Observe reduced speed limits within the construction zone. Double fines will be applied.

    For any further information  please  call the road information line at 1-800-661-0750

    ADDITIONAL INFORMATION:

    Please verify that your vehicle configuration conforms with the loading allowed under the registration documents and to the “Large Vehicle Control Regulations” available here.

    Any changes to the Allowable Legal Axle Weight Percentages will be announced 48 hours in advance by the Department on the Public Highway Information Service available toll free at: 1-800-661-0750.