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Dear Valued CN Customer,

To all Customers shipping to/from the Province of Quebec: In order to avoid a potential backlog of heavy loads requiring special handling we are implementing our Spring Weight Restrictions in advance of the Quebec Government notice. We are planning to have all heavy loads arrive in March prior to the start of restrictions as outlined by the Government of Quebec below. If the Government of Quebec issues an earlier date, we will adjust accordingly.


Spring thaw Zone 1 tentative date is March 8th 00:01 to May 7th 23:59
Spring thaw Zone 2 tentative date is March 15th 00:01 to May 14th 23:59
Spring thaw Zone 3 tentative date is March 22nd 00:01 to May 21st 23:59

Please note that payload weights in equipment to be delivered by CNTL must be reduced to meet the requirements in tables below for shipments planned to arrive after the start dates noted above.

To assist our customers during this period of reduced payload:

CN will establish a "Latest Shipping Date" where customers may ship at regular payload weights from each terminal (based on the consignee receiving the traffic immediately upon arrival at the destination terminal).

Note the shipping date will be referred to as the Reservation Date. CN’s online tools can assist in determining both the Reservation Date and Trip Plan.

In the event of an overweight load, CN may arrange for transloading, or use specialty equipment to deliver the load. Any required transloading will be done at the prevailing market rate. Charges for use of quad chassis are per tariff CN-9100 ($800 premium per delivery). To ensure that specialty equipment is not detained, all deliveries must be live-unloads. Any overweight arrangements will be completed only after receiving written confirmation that the payer understands the charges.

Overweight traffic delayed online, but shipped prior to the "Latest Shipping Date", will be delivered by CN without the application of overweight charges.

The following table shows the "Latest Shipping Date" relative to the start of CN’s Spring Weight Restrictions:

Table 1 – Latest Shipping Date for Deliveries in Quebec’s Zone 1

Traffic Origin: Latest shipping date for spring 2021
Halifax 21 February
Moncton 21 February
Montreal -
 Toronto 21 February
Winnipeg 21 February
Saskatoon 14 February
 Regina 14 February
Edmonton 14 February
Calgary 14 February
Vancouver 14 February
Detroit 21 February
Chicago 21 February
Memphis 21 February
Jackson 21 February
New Orleans 21 February
Mexico 10 February

The maximum payload handled using CNR equipment during the Spring Weight Restriction period is:

Table 2 – Maximum Payloads & Axle Weights

53ft dry 49,100 lbs
53ft heat 47,700 lbs
53ft reefer 46,500 lbs
40ft Ecotherm 51,300 lbs
40ft dry 52,500 lbs
45ft dry
50,400 lbs
20ft dry 51,600 lbs

Table 3 – Maximum gross weight

Steer and Drive Weights Cannot Exceed:
Front single axle 12,000 lbs
Tandem axle 34,100 lbs
Triple axle on 60-inch spread chassis 46,300 lbs
 Total Gross weight  92,400 lbs

Thank you for shipping with CN

CN Intermodal

PS. Please visit our web site for maximum payloads throughout our network for traffic hauled by CN Drivers.