Landslide obstructs section of Highway 40 in Kananaskis, causing closure
Mudslide Closure Affects Highway 40 in Kananaskis Country
A mudslide on Highway 40 in Kananaskis Country has caused a closure between the Mount Lipsett Day-use Area and Mist Creek Day-use Area, south of Kananaskis Village. The closure began on August 3, 2025, and has already extended beyond the initial two-day estimate.
Duration of Closure
Crews and the RCMP indicated on August 3 that the highway would be impacted for around two days. However, updates on August 5 confirmed the closure was still in effect and expected to remain for several days as cleanup and safety assessments proceed.
Alternate Routes
Drivers were advised by 511 Alberta to find alternate routes since the specific section of Highway 40 affected is closed. Common alternatives include using the Trans-Canada Highway (Highway 1) east or west and Highway 1A where possible, though exact alternate routes depend on individual destinations since Highway 40 cuts through a scenic but remote area with few direct detours.
Traffic Impact
This closure affects access to popular outdoor recreational areas and Kananaskis Village. It likely results in delays and detours for travelers heading to or through Kananaskis Country, especially during the busy summer holiday period. Local authorities and 511 Alberta have been issuing advisories advising motorists of the closure and recommending alternate routing.
The Mudslide Incident
Samson Joseph was the last hiker on the trail before the mudslide occurred. The mudslide occurred some time between Joseph's ascent and descent from the trail. The mudslide has caused extensive damage to the road and the bridge, with a large pile of rocks, mud, debris, and soil blocking the way. The bridge near the trail head has been taken down by the mudslide.
Volker crews were on hand at the site of the mudslide, and no further information about the cause or extent of the mudslide is currently available. The RCMP spokesperson expects the highway to be impacted for approximately two days.
[1] 511 Alberta update - August 3, 2025 [2] 511 Alberta update - August 4, 2025 [3] RCMP update - August 3, 2025 [4] RCMP update - August 5, 2025 [5] CBC News article - August 4, 2025 (optional for additional context)
- General news outlets reported an extended closure of Highway 40 in Kananaskis Country due to a mudslide, which initially was estimated to last only two days but has continued for several more, causing delays and detours for travelers.
- In addition to the closure of Highway 40, this incident also affected the general-news spectrum, as it led to accidents on the affected roads and altered weather patterns due to the large amount of debris blocking the way.
