SPRING THAW RESTRICTIONS FOR INTERMODAL

Feb 11, 2025
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To comply with the mandated requirements and avoid a backlog of loads requiring special handling, we will implement Spring Weight Restrictions in advance of the Quebec Government notice.

For customers shipping to and from the province of Quebec, Bison will be implementing reduced weight requirements as outlined below in Tables 1 & 2.

*As a reminder –  some shipments may have Eastern Ontario destinations, (Cornwall, Ottawa, etc.), but are serviced through the Lachine Terminal and will be required to adhere to these guidelines.

For rail into NB restrictions are based on Zone limits and loads should be vetted by Intermodal prior to commitment.

The annual start date for cargo weight restriction is still only ‘Predicted’, currently estimated for March 17th, and is regulated by the Quebec Provincial government. The timing is dependent on several factors with the intention of minimizing damage to Provincial roads. Our plan is to have all loads exceeding the thaw period weight limits arrive/depart Quebec before March 17.

Should the Province mandate an earlier start date adjustments will be communicated. All loads exceeding the prescribed thaw period weight limits will be subject to special handling charges.

Table 1 – Latest shipping date for deliveries in Quebec

Traffic origin 
 Latest shipping date for Spring 2025 
Vancouver IMSMonday, March 3rd
Edmonton IMSMonday, March 3rd
Calgary IMSTuesday, March 4th
Regina IMSTuesday, March 4th
Winnipeg IMSTuesday, March 4th
Vaughan IMSN/A
Lachine IMS*Outbound* Friday, March 14th
Bensenville IMSMonday, March 3rd
Wylie TXFriday, February 28th
Laredo TXFriday, February 28th
MexicoWednesday, February 26th

Table 2:  Maximum Payloads – allowable content weight:

ChassisContainer typeDestination Lachine (Pounds)
Tridem53′ Refrigerated46,500
Tridem53′ Heater48,300
Tridem53′ Dry Van48,000
Tridem40’ Marine Dry51,000

Spring Thaw Allowable Axle Weights:

Steer AxleDrive AxleRear Axle
12,10034,10034,100
12,10034,10046,250


Weight Restrictions Policy:

Bison will not ingate any containers with a payload more than the Government of Quebec Spring thaw weight restrictions after “Last Shipment Date”.

  • Scaling will be required prior to billing/ingate for ALL Intermodal shipments with destination of PQ.
    • Axle Weights must comply with guidelines and should be provided to the IM Regional Coordinator as soon as scaling has been completed
  • If a shipment is scaled Overweight, the shipper is required to make necessary adjustments to comply with loading guidelines prior to ingate.
    • All associated redelivery / Driver wait charges are to be assessed to customer.
  • A Customer Bulletin will be communicated when the weight restrictions are lifted. This is regulated by the Quebec Provincial government Ministry of Transport.

Lindsey Kosa

Manager, Rail Relationships & Performance

Lisa Bjornson

Manager, Intermodal Operations


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