Denali road limit

Denali National Park’s only road into the backcountry will stop at Mile 43 again this summer, leaving nearly half the 92-mile route inaccessible by vehicle. (nps.gov) The National Park Service says the closure will remain in place through summer 2026 while it carries out the Polychrome Area Plan, a construction project tied to the Pretty Rocks landslide near Mile 45.4. The agency says it expects the full road to reopen and all bus service to resume in 2027. (nps.gov 1) (nps.gov 2) Pretty Rocks has been moving for decades, but park officials said the slide sped up sharply in late summer 2021, from inches per day to inches per hour, making the road unsafe to maintain. The closure has stayed in place since then. (nps.gov 1) (nps.gov 2) Denali has one park road, and that single corridor carries buses, campers, and visitors to places including Polychrome Overlook, Toklat, Eielson Visitor Center, and Wonder Lake. The 2021 closure cut off vehicle access to those western destinations. (nps.gov 1) (nps.gov 2) Visitors this season can still reach the Denali Visitor Center area, the sled dog kennels, and the East Fork area at Mile 43. Transit and tour buses are still scheduled to operate to that point, and reservations are strongly recommended. (nps.gov) (reservedenali.com) The fix is not a simple repaving job. The National Park Service and the Federal Highway Administration are building a bridge to bypass the unstable slope and address nearby slide hazards in the Polychrome area. (nps.gov) (nps.gov) Park officials say Pretty Rocks is one of more than 140 mapped unstable slopes along the park road, which is why the work now covers a broader stretch than the original slide alone. The landslide itself crosses about 100 yards of the full road width near the midpoint of the route. (nps.gov) (nps.gov) For summer 2026, the practical change is the same one visitors have faced for several seasons: buses turn around at Mile 43, and the western half of Denali remains out of reach unless the 2027 reopening stays on schedule. (nps.gov) (nps.gov)