A Canadian Pacific locomotive and its cars that were knocked off of the train track by heavy rains and mudslides earlier in the week is pictured in the Fraser Canyon near Hope, B.C., Thursday, Nov. 18, 2021. Canadian Pacific Railway Ltd. says the first trains have rolled into Vancouver since flooding and mudslides cut key supply links in southern British Columbia earlier this month. THE CANADIAN PRESS/Jonathan Hayward

The first trains have rolled into Vancouver since flooding and landslides cut key supply links in southern British Columbia, Canadian Pacific Railway Ltd. said.

CP cars loaded with Prairie grain and fuel chugged into the port city this morning after limited service resumed on washed-out tracks.

The Calgary-based company said its rail corridor sustained damage in some 30 locations between Vancouver and Kamloops, B.C., with "significant loss of infrastructure" at 20 of them.

"The coming days are going to be critical to bring the entire supply chain back into sync," spokeswoman Salem Woodrow said in a phone interview.

Hundreds of employees and contractors have been working around the clock to repair rail lines after torrential rains and mudslides swallowed streets and devastated highways, tossing aside CP railcars and at least one locomotive along the Fraser Canyon near Hope, B.C.

East of Lytton, B.C., tracks remain suspended above a chunk of the Trans-Canada Highway that was swept away by a landslide.

Starting Nov. 14, flooding snarled the movement of goods between Canada's biggest port and B.C.'s Okanagan Valley region, displaced hundreds of residents and stranded thousands, leaving at least four people dead.

Canadian National Railway Co. said it also planned to restore limited service Wednesday.

"Repair work continues to progress on CN’s network and we anticipate to have trains moving on the line between Prince George and Vancouver this afternoon and that the Kamloops-Vancouver corridor will reopen overnight tonight barring any unforeseen issues," spokesman Mathieu Gaudreault said Wednesday in an email.

November is a critical time for shipment of grain — canola in particular — with the bulk of Canadian grain transported via rail to B.C. ports.

Some can be diverted to Prince Rupert, B.C., the United States or Thunder Bay, but the window for the latter is nearly closed as winter ice looms, while rail cargo generally is hard to divert en masse.

Contract extension penalties and demurrage fees — issued by a shipping line when freight exceeds the time allotted at a terminal — present a threat for farmers and grain elevators trying to clear out brimming barns and silos.

The backlog of Prairie grain may lose much of its value if trains can't ship it to port before spring, when prices typically drop amid heightened global supply, according to the Western Grain Elevator Association.

John Gradek, a transportation expert and former senior manager at CP, says questions remain about traffic capacity in the short term and infrastructure resilience in the long term.

“The track may be open, but they're still not you carrying the volume they did in the past," he said of Canada's two biggest railways.

Stretches of the corridors operated by CP and CN hug the Fraser River east of Vancouver. Others snake through avalanche-prone peaks protected by "snow sheds" — tunnel-like cladding that covers the track — or run along thin plateaus between the river and mountains.

"You had river bed erosion from flooding that created these spaces … so you were literally building on flood planes. You’re building on risky territories when you do that," Gradek said.

"There may be a need to go back and review the topography of those tracks to understand what kind of infrastructure we can design or build to protect from landslides."

This report by The Canadian Press was first published Nov. 24, 2021.

Companies in this story: (TSX:CP, TSX:CNR)

News from © The Canadian Press, 2021