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Saskatchewan Axle Weight Limits

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Maximum Legal Weight Allowed

The maximum gross weight for a steering axle or a tire is:

  • The maximum gross weight on any tire, except a tire on a steering axle on a bus, truck or truck tractor, is 10 kilograms per millimetre of tire width, as determined by the manufacturer’s width shown on the tire, up to a maximum of 3000 kilograms.
  • The maximum steering axle weight for a truck tractor equipped with a single drive axle or a tandem drive axle group is 6 000 kilograms.
  • The maximum steering axle weight for a truck tractor equipped with a tridem drive axle group is 7 300 kilograms.

The maximum gross weight for a single axle or any axle within an axle group or axle unit is:

  • 9 100 kilograms on a primary highway;
  • 8 200 kilograms on a secondary highway;
  • 8 200 kilograms on a municipal highway; and
  • during winter weight season, 10 000 kilograms on highways mentioned in clauses (a) to (c).

The maximum gross weight for a single-half axle unit is:

  • 12 750 kilograms on a primary highway;
  • 10 875 kilograms on a secondary highway;
  • 10 875 kilograms on a municipal highway; and
  • during winter weight season, 13 500 kilograms on highways mentioned in clauses (a) to (c).

The maximum combined gross weight of a wide-spread tandem axle group is:

  • 9 100 kilograms on a primary highway;
  • 8 200 kilograms on a secondary highway;
  • 8 200 kilograms on a municipal highway; and
  • during winter weight season, 10 000 kilograms on highways mentioned in clauses (a) to (c).

For a tandem axle group or any two adjacent axles within a tridem axle group, the maximum gross weight is:

  • 17 000 kilograms on a primary highway;
  • 14 500 kilograms on a secondary highway;
  • 14 500 kilograms on a municipal highway; and
  • during winter weight season, 18 000 kilograms on highways mentioned in clauses (a) to (c).

For a tridem axle group other than a tridem drive axle group, the maximum gross weight is:

  • 24 000 kilograms on a primary highway, if the axle spread is greater than 3.6 metres but not greater than 3.7 metres;
  • subject to subsection (10), 23 000 kilograms on a primary highway, if the axle spread is greater than 3.0 metres but not greater than 3.6 metres;
  • 21 000 kilograms on a primary highway, if the axle spread is greater than 2.4 metres but not greater than 3.0 metres;
  • 20 000 kilograms on a secondary highway;
  • 20 000 kilograms on a municipal highway; and
  • during the winter weight season, weights as set out in clauses (a), (b) and (c) apply to the highways mentioned in clauses (d) and (e).

If the axle spread of a tridem axle group is greater than 3.0 metres, but not greater than 3.6 metres, the maximum gross weight for that tridem axle group is 24 000 kilograms on:

For a multiple axle group, the maximum gross

  • 17 000 kilograms for a multiple axle group consisting of three or more axles with 12 or more tires; and
  • 15 000 kilograms for a multiple axle group consisting of three or more axles with fewer than 12 tires.

In the case of an A-train or C-train, if the axle spacing between the rear axle unit on the lead trailer and the converter dolly axle unit is less than 3.0 metres:

  • the maximum combined weight for two single axles is 17 000 kilograms; and
  • the maximum combined weight for a single axle and a tandem axle group is 23000 kilograms.

In the case of an end dump semi-trailer manufactured before January 1, 1989, the maximum combined weight for a tandem axle group on the semi-trailer and an adjacent tandem axle group within a combination of vehicles is:

  • 32 000 kilograms, if the interaxle spacing is less than 5.0 metres but not less than 3.4 metres;
  • 30 000 kilograms, if the interaxle spacing is less than 3.4 metres but not less than 3.0 metres; or
  • 35 000 kilograms during the winter weight season for the axle group interaxle spacing listed in clause (a).

In the case of an end dump semi-trailer manufactured on or after January 1, 1989, the maximum combined weight for a tandem axle group on the semi-trailer and an adjacent tandem axle group within a combination of vehicles is:

  • 32 000 kilograms, if the interaxle spacing is less than 5.0 metres but not less than 4.5 metres;
  • 30 000 kilograms, if the interaxle spacing is less than 4.5 metres but not less than 3.0 metres; or
  • 35 000 kilograms during the winter weight season for the axle group interaxle spacing set out in clause (a).

Maximum Gross Weights During Spring Road Bans (Restrictions)

Note: There are 9 separated maximum weight charts for 9 load configurations in Appendix A, should I add here all of them?

Maximum Permit Weight Allowed

Maximum Allowable Registered Gross Vehicle Weight (GVW) – 63,500 kg

Source of information: http://www.publications.gov.sk.ca/freelaw/documents/English/Regulations/Regulations/H3-01R8.pdf
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

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