Trail Ridge Road, the U.S. Highway 34 route through Rocky Mountain National Park in Colorado and the highest continuous paved road in North America, closed to through-vehicle travel for the winter season on Friday, November 13, 2026, the National Park Service announced. The closure ends through driving between Estes Park on the park's east side and Grand Lake on the west side until the road reopens in the spring.

Source: Rocky Mountain Journal (National Park Service announcement)

The park said the road is closed on the east side of the park at Many Parks Curve and on the west side at the Colorado River Trailhead. Drivers can still travel on the east side as far as Hidden Valley and Many Parks Curve, and on the west side from the Grand Lake Entrance to the Colorado River Trailhead, but no vehicle can cross the full route until the seasonal closure ends.

The park said Trail Ridge Road was never designed as an all-season road. "Eleven miles of road are above 11,500 feet, with few guardrails and no shoulders," the park said. "Drifting snow, high winds and below-freezing temperatures commonly occur above 10,000 feet." Those conditions are why the high section closes every winter, even while lower park roads stay open.

Source: Rocky Mountain Journal (National Park Service announcement)

What stays open in the park this winter

Several scenic driving destinations remain open during the winter, the park said, including Bear Lake Road and Endovalley Road. A small section of Old Fall River Road also appears in the park's high-country views, but that road closed earlier in the fall. Visitors who come for winter hiking, snowshoeing or sightseeing can still reach those lower routes from the park entrances.

"The closed portion of the road remains open to pedestrians, bicyclists and leashed pets during the winter," the park said. "Bicycles and leashed pets are only allowed on the road, not on side trails or on tundra." The park urged visitors to be prepared for harsh and rapidly changing conditions at high elevations if they plan to hike or bike up the closed road.

Background: a summer-only crossing between Estes Park and Grand Lake

Trail Ridge Road travels from Estes Park, Colorado, to Grand Lake, Colorado, crossing the Continental Divide country above the treeline, with views from the Alpine Visitor Center near the road's high point. Because 11 of its 48 miles sit above 11,500 feet, with no guardrails or shoulders on much of the high section, the National Park Service treats it as a seasonal road: it opens only after spring snow clearing and closes again when winter weather makes the high country unsafe. In 2026 it reopened on Friday, May 29, the park said.

Source: Denver Gazette via DeepArrival

For drivers, the practical effect is that there is no through route across Rocky Mountain National Park until late spring: trips between the Estes Park side and the Grand Lake side must go around the park instead, adding substantial distance. Truckers and travellers crossing northern Colorado in winter should treat U.S. 34 through the park as unavailable and plan routes accordingly, and check conditions before leaving, because high-elevation weather in Colorado can change quickly even on roads that remain open.

What happens next: the road typically reopens to through travel during the last week of May, weather permitting. Until then, the park says visitors should check current conditions before any trip to the high country.