The British Columbia Ministry of Transportation and Infrastructure maintains an updated database that posts notices of seasonal load restrictions by region. Depending on the region, weight restrictions may already be in place, while others are scheduled to take place imminently. The ministry also offers email notification of load restrictions via subscription service.
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 restriction" to "50%" of rated axle weights. It also includes access to recently update Load Restrictions and Road Reports.
British Columbia:Calculate Oversize/Overweight Load Regulations and Prices Instantly with Oversize.io