Rocky Mountain National Park road closures.

Every Rocky Mountain road on one timeline.

Two Rocky Mountain roads close for winter, and both are high. NPS says Trail Ridge Road isn't designed to be an all-season road: 11 miles sit above 11,500 feet, with few guard rails and no shoulders. It normally closes to through travel in mid-October and opens during the last week in May, weather permitting, and NPS announced it open for 2026 on May 29. Old Fall River Road is open to vehicles each year from early July to early October, and it opened July 4, 2026. Neither has a published 2026 closing date. Road seasons are separate from timed entry, which our Rocky Mountain reservations page explains, and our Trail Ridge Road page covers that one road in detail.

What you can drive in winter.

Winter closes the crossing, not the park. When Trail Ridge Road closed to through travel on November 14, 2025, NPS gated it at Many Parks Curve on the east side and at the Colorado River Trailhead on the west. Below those gates the road stays a scenic drive. On the east side you can drive to Hidden Valley and Many Parks Curve, and on the west side from the Grand Lake Entrance to the Colorado River Trailhead. NPS also names Bear Lake Road and Endovalley Road as winter drives. What you can't do in winter is drive across, so the east and west sides are separate trips.

Bear Lake Road is open year-round. It's 9.2 paved miles, climbing from 8,200 feet at the Trail Ridge Road junction near the Beaver Meadows Entrance to 9,475 feet at the Bear Lake trailhead. In winter and spring, expect snow and ice on it, and traction control can go into effect at any time. Our Rocky Mountain in winter page covers the rest of a winter trip.

Temporary closures and roadwork.

Closures don't only come with the seasons. NPS says temporary road closures can go into effect at any time, based on weather and conditions, and that you should be ready for strong winds, blowing snow and icy roads at any time, summer included. Old Fall River Road, winding, narrow and unpaved, can close temporarily too. When Trail Ridge Road opened in 2026, NPS said it wasn't using nightly closures, but that visitors should be ready to change travel plans at any time because weather changes fast up high.

Roadwork closes roads for a few days at a time. From July 21 to 23, 2026, Wild Basin Road was closed to all uses, walkers and bikes included, from the Wild Basin Entrance Station along the whole two-mile road to the Wild Basin Trailhead, while the roads crew spread gravel and graded out ruts and potholes. That closure has ended. Check the status line the week you go.

Trailhead repairs close parking too. From September 28 to October 1, and again October 5 to 8, 2026, the Glacier Gorge Parking Area and Trailhead are closed to all uses, including cars and shuttle buses, while crews repair erosion damage. They reopen October 2 to 4 in between. Hikers headed to Alberta Falls, Mills Lake, or Loch Vale start from the Bear Lake Trailhead instead (NPS news release).

Colorado's traction law.

Colorado's Vehicle Traction Law can go into effect on park roads at any time, based on weather and road conditions. The park has federal jurisdiction, but it's authorized to enforce state traffic rules, and this is one of them. When it's active, every vehicle, whether 4-wheel drive, all-wheel drive or 2-wheel drive, needs properly rated tires: Mud and Snow, Mountain and Snow, or All-Weather, with at least 3/16 of an inch of tread. If your tires don't qualify, you need an approved traction device, such as snow chains, cables, tire or snow socks, or studded tires.

The rule matters most after something goes wrong. If your vehicle is in a crash while the traction law is in place, including sliding off an icy road, you'll be cited if it doesn't meet the requirements. Check the tire rating before a winter or spring drive, because Bear Lake Road can go under traction control at any time in those seasons.

How crowds follow Trail Ridge Road.

Rocky Mountain's crowd waits for Trail Ridge Road. April, with the road closed to through travel, averages 21% of the visits of July, the busiest month. May, when the road normally opens in the last week, is 40%. June, the first full month it's open, jumps to 79%.

Fall falls off as the high roads close. September still averages 75% of July, with both Trail Ridge Road and Old Fall River Road open. October, when Old Fall River Road closes early in the month and Trail Ridge Road normally closes mid-month, is 50%. November is 19%. In 2026, timed entry runs through October 12, and through October 18 for the Bear Lake Road corridor. The best time to visit Rocky Mountain page weighs the months, and the September guide covers the last full month both high roads are open.

Old Fall River Road: size limits.

Old Fall River Road has the tightest rules in the park. It's 9.4 miles, one-way uphill only, and unpaved, from Endovalley Picnic Area to Fall River Pass at 11,796 feet, where it meets Trail Ridge Road at the Alpine Visitor Center. Because it's narrow with sharp switchbacks, vehicles over 25 feet and vehicles pulling trailers or tow vehicles are prohibited. Between 9 a.m. and 2 p.m., getting to it takes a timed entry reservation, like the rest of the park outside the Bear Lake Road corridor. Our Rocky Mountain camping page lists each campground's RV limit.

Common questions.

Can I get into Rocky Mountain National Park right now?

Yes. The park is open 24 hours a day, 365 days a year, weather permitting. What changes is how far you can drive. From the last week in May to mid-October, Trail Ridge Road normally crosses the park, and the rest of the year only its lower ends, Bear Lake Road and Endovalley Road are open to cars. From May 22, 2026, entering during set daytime hours also takes a timed entry reservation, which our reservations page explains.

Is Rocky Mountain National Park open today?

The park is open every day. For today's road status, NPS doesn't use its website. Call the recorded Trail Ridge Road Status Line at 970-586-1222, watch the variable message boards in the park, or follow @RockyNPS on Twitter. Temporary closures can go into effect at any time, based on weather and conditions, even in summer.

Do I need snow tires or chains in Rocky Mountain National Park?

Only when Colorado's traction law is active, and it can switch on at any time, based on weather and road conditions. Then every vehicle needs Mud and Snow, Mountain and Snow, or All-Weather tires with at least 3/16 of an inch of tread, or chains, cables, tire socks or studded tires. If you crash or slide off the road without them, you'll be cited.

Are the national parks closed if the government shuts down?

Not the roads, generally. The current National Park Service contingency plan says park roads, lookouts, trails, and open-air memorials will generally remain accessible to visitors during a lapse in appropriations. It also says parks will not provide regular road or trail condition updates, and that an area must be closed if access becomes a safety issue, such as weather or road conditions. The season dates on this page don't change, but the status line and the park's posts may not keep up.

Where these facts come from

Bear Lake Road, Old Fall River Road and its limits, the Wild Basin closure, temporary closures, the traction law, the status line, Trail Ridge Road's length and height, and the note that road status isn't posted online come from the NPS park roads page (updated July 16, 2026); the 2026 opening and the nightly closure note from the NPS news release of May 29, 2026; the Glacier Gorge closure from the NPS news release of September 9, 2026; the normal season, the 2025 opening and closing, the winter gates, and the winter drives from the NPS news release of November 14, 2025; park hours from the NPS hours page; timed entry dates from the NPS timed entry page. The shutdown answer comes from the September 2025 National Park Service contingency plan posted on the Department of the Interior shutdown page. The road lines on the map are OpenStreetMap geometry between OSM nodes, routed by OSRM (© OpenStreetMap contributors, ODbL); they show where each road runs, not its closure gates. The Many Parks Curve and Colorado River Trailhead pins are OpenStreetMap nodes. Crowd numbers are five-year monthly means (2021 to 2025) of recreation visits from the NPS Visitor Use Statistics Data Package on NPS IRMA Stats. Independent site, not affiliated with the National Park Service.