Longer-than-anticipated avalanche control in Glacier National Park will close the Trans-Canada Highway between Revelstoke and Golden all of Wednesday afternoon and evening, Emcon Services has shared.

Highway 1 will remain inaccessible for 10 hours on March 26, from 12 to 10 p.m., as Parks Canada performs avalanche control work in the park at Rogers Pass, Emcon's Selkirk Division operations manager Kody Moncrief told Black Press Media by email.

A total of 141 kilometres of highway remain inaccessible both ways to traffic, between Revelstoke's Townley Street and Golden's Anderson Road, without any detour available. This shuts access through both Mount Revelstoke and Glacier National Parks.

"Due to some unpredictable weather conditions which are causing rapidly increasing avalanche hazard, Parks Canada will be performing avalanche control in Rogers Pass resulting in Highway 1 closure between Revelstoke and Golden today," Moncrief explained.

He added today's closure was originally planned only for Ministry of Transportation and Transit avalanche work in provincial boundaries outside the parks, but has now been extended to Parks Canada land.

An update on the closure is expected as of 9:45 p.m. Wednesday.

Visit  for updates.