National Park Road Opening Dates
When the seasonal roads, gates, campgrounds and visitor centres normally open and close in every national park that closes part of itself for winter, with the years of actual opening dates the parks publish and a link to the page that has today.
32 of the 87 seasons here open when a plow crew gets through, not on a dateLead with the answer
Most alpine park roads open between the middle of May and the end of June, and none of them opens on a date.
The gate goes up when a plow crew finishes, and the crew finishes when the snowpack lets them. Across the 4 published records the parks keep, the middle opening date for Going-to-the-Sun Road over Logan Pass is 11 June, for Yosemite's Tioga Road it is 23 May, and for the Lassen park highway it is 2 June. The spread between the earliest and latest year is 60 days at Logan Pass and 105 days on Tioga Road. Book against the middle date and you are on the wrong side of it half the time.
What opens when, across the whole country
Every headline road, entrance and facility in this vertical, on one calendar year, ordered by when it normally opens. Denali plows to mile 13 in February so people can drive out for the light; Old Fall River Road in Rocky Mountain National Park does not take a car until the first week of July. Both are in the same country and the same national park system.
- Opens on plowing progress
- Park published dates
- Fixed by rule each year
- Open year round, storm closures
Bars are the normal season each park describes on its own page, not a status and not a forecast. A bar starts where the park's own words put it, and the colour says what governs the date rather than what the road is doing. Read on 3 September 2026; every row's source and the park's own last-updated stamp are in the table further down.
A plow crew, not a calendar
An alpine park road is not closed in the way a shop is closed. It is buried. Glacier says clearing its roads takes two and a half to three months; Lassen clears up to forty feet of snow off thirty miles of highway; Yosemite starts on Tioga Road around 15 April and finishes between one and two months later, whenever that turns out to be.
Lassen Volcanic National Park, Spring Snow Clearing“Highway 89 through Lassen Volcanic National Park is known as the official park highway. This 30-mile stretch traverses avalanche-prone slopes with up to 2,000 foot drops and can hold a snowpack up to 40 feet deep.”
National Park Service, public domain. That page carries the park’s own stamp: last updated May 24, 2026.
Between the plow and the gate there is a second job nobody thinks about. The snow above the road has to be made safe first. Yosemite sends an avalanche team ahead of its plows and spreads charcoal at Olmsted Point to melt the slope faster; Glacier surveys the Big Drift at Logan Pass on foot, roped up, before a machine goes near it.
Yosemite National Park, Tioga and Glacier Point Roads Plowing and Road Opening Update“Each spring, plowing crews set out to clear 45.5 miles along the Tioga Road. Crews must safely navigate through multiple avalanche zones. In addition to several feet of snow, downed trees and rockfall often need to be cleared from the road.”
National Park Service, public domain. That page carries the park’s own stamp: last updated May 13, 2026.
Which is why the parks themselves refuse to predict. Yosemite puts it as plainly as anyone could ask for:
Yosemite National Park, Historical Seasonal Opening and Closing Dates“Clearing of the Tioga Road begins on or about April 15 each year and usually takes between one and two months. Predicting when these roads will open is not possible, even in late spring, because weather in April and May can affect plowing progress significantly.”
National Park Service, public domain. That page carries the park’s own stamp: last updated January 16, 2026.
The pattern across every park in this vertical is the same. Where a road crosses a high pass, the park describes a window and refuses a date. Where a road is closed by rule rather than by snow, the park gives exact dates and keeps them: Acadia shuts the Park Loop Road from 1 December to 14 April every year, and Grand Teton shuts the Teton Park Road from 1 November to 30 April, partly to leave a corridor for wildlife rather than because the plows cannot cope. Those two kinds of closure look identical on a map and behave nothing alike, so this vertical labels every row with which one it is.
Summarised from the National Park Service road and conditions pages for all 24 parks covered here in our own words.
Three parks keep the receipts
Most parks describe a normal season and leave it there. Three publish the actual date, year by year, for decades, which turns an unanswerable question into a measurable one. Glacier keeps Logan Pass back to 1933, the longest such record in the system. Yosemite ships Tioga Road and Glacier Point Road as a downloadable spreadsheet with the 1 April snowpack beside each year. Lassen publishes its highway back to 1980 with the snow depth measured at Lake Helen.
Logan Pass on Going-to-the-Sun Road: every opening since 1933
1933 to 2022, 90 seasonsNinety published seasons at Logan Pass, and the middle one opens 11 June. The earliest was 16 May in 1987 and the latest 15 July in 1933, the year the road was dedicated. In the modern record the late years cluster hard: 13 July in 2011, 2020 and 2022, all three for different reasons, and the park footnotes each one. The park’s own footnotes are worth reading as a list of everything that can go wrong. Avalanche damage. A rockslide two days after opening. A government shutdown. A pandemic. A fire on the west side. An exceptional snowpack and winter weather through June, twice.
Tioga Road across Yosemite: every opening since 1957, shaded by the 1 April snowpack
1957 to 2025, 68 seasonsYosemite is the one place you can see the mechanism directly, because it publishes the snowpack next to the date. In 2015 the Tuolumne drainage was at 7 percent of average on 1 April and Tioga Road opened on 4 May. In 2023 it was at 244 percent and the road opened on 22 July. That is eleven weeks of difference in the same road, decided by a number measured in April.
The Lassen park highway: every opening since 1980, shaded by the 1 April snow depth
1980 to 2026, 47 seasonsLassen Volcanic National Park, Spring Snow Clearing“The park does not have an established date for the full opening of the park road.”
National Park Service, public domain. That page carries the park’s own stamp: last updated May 24, 2026.
Every road and facility, with the park’s own date stamp
The last column is the part that matters most and that nobody else shows you: the date the park itself last touched the page the season came from. Some of those stamps are two or three years old. That is not a fault in the record, it is the record: a park that has not revised its description of a normal season since 2022 is telling you the season has not changed, and a page revised last week is telling you something did.
| Road or facility | Park | Normal season | What sets the date | Park last updated |
|---|---|---|---|---|
| Denali Park Road to Mountain Vista, mile 13 | Denali | plowing begins in February and the road typically opens to cars as far as mile 13 by mid February | Moves with the snow | January 29, 2025 |
| Forge Creek Road | Great Smoky Mountains | 6 March to 31 December in the 2026 schedule, closed for snow, ice or mud inside that | Published dates | April 20, 2026 |
| Lodges, campgrounds and waysides | Shenandoah | most facilities begin opening in March and close by late November | Fixed by rule | May 18, 2026 |
| Bryce Canyon Shuttle | Bryce Canyon | operates April to 20 October | Fixed by rule | August 14, 2026 |
| Kuwohi Road, formerly Clingmans Dome Road6,643 ft | Great Smoky Mountains | 1 April to 29 November in the 2026 schedule, and subject to closure for snow and ice inside that | Published dates | April 20, 2026 |
| Little Greenbrier Road to the schoolhouse | Great Smoky Mountains | 3 April to 29 November in the 2026 schedule | Published dates | April 20, 2026 |
| Rich Mountain Road | Great Smoky Mountains | 10 April to 9 November in the 2026 schedule, one way out of Cades Cove | Published dates | April 20, 2026 |
| Hiking and cycling the cleared but unopened highway | Lassen Volcanic | sections open to walkers and cyclists as the plows finish them, weeks before cars are let through | Moves with the snow | May 24, 2026 |
| Park Loop Road and the Cadillac Summit Road1,530 ft | Acadia | closed by rule from 1 December to 14 April, with the actual spring opening weather dependent | Fixed by rule | May 19, 2025 |
| Sunset Campground | Bryce Canyon | open mid April to October, while North Campground stays open year round | Fixed by rule | August 14, 2026 |
| The entire national park | Isle Royale | open 16 April to 31 October and closed outright the rest of the year, the closure reaching four and a half miles out into Lake Superior | Fixed by rule | June 6, 2026 |
| Roaring Fork Motor Nature Trail | Great Smoky Mountains | 17 April to 29 November in the 2026 schedule, one way and very steep | Published dates | April 20, 2026 |
| West Entrance, Madison, Old Faithful, Norris, Mammoth and Canyon | Yellowstone | 17 April to 31 October in the 2026 schedule, the first big block of the park to reopen | Published dates | September 1, 2026 |
| South Rim Road beyond the visitor centre | Black Canyon | usually open to vehicles from late April to mid November | Moves with the snow | November 13, 2025 |
| Mariposa Grove Road and its shuttle | Yosemite | the shuttle runs approximately late April through November, and the road itself is open only to disability placards when it is open at all | Storm closures | September 3, 2026 |
| East Entrance to Fishing Bridge over Sylvan Pass | Yellowstone | 1 May to 31 October in the 2026 schedule | Published dates | September 1, 2026 |
| Henry M. Jackson Memorial Visitor Center at Paradise | Mount Rainier | usually daily from May to early October, then weekends only from mid October through April | Fixed by rule | June 22, 2026 |
| Kings Canyon Scenic Byway to Cedar Grove, Highway 180 | Sequoia and Kings Canyon | typically open from May through early to mid November | Moves with the snow | July 1, 2026 |
| Kolob Terrace Road above Maloney Hill7,890 ft | Zion | usually closed for several months from fall to spring, on snow | Moves with the snow | June 9, 2026 |
| Lava Point Road and Campground | Zion | the road closes most years from fall until spring and the campground is open as weather allows, typically May through September | Moves with the snow | June 9, 2026 |
| Parson Branch Road | Great Smoky Mountains | 1 May to 9 November in the 2026 schedule, one way and eight miles of it | Published dates | April 20, 2026 |
| State Route 20 over Washington Pass and Rainy Pass5,477 ft | North Cascades | the North Cascades Highway is a state highway, closed most winters between Ross Dam and Early Winters and reopened by WSDOT in spring | Moves with the snow | May 15, 2025 |
| Teton Park Road, Taggart Lake to Signal Mountain Lodge | Grand Teton | closed 1 November to 30 April by rule, not by snow | Fixed by rule | September 2, 2026 |
| Going-to-the-Sun Road, hiker and cyclist season above the closure | Glacier | early May through late June or early July, while the plows are still working | Moves with the snow | September 13, 2022 |
| South Entrance to West Thumb and over Craig Pass to Old Faithful | Yellowstone | 8 May to 31 October in the 2026 schedule | Published dates | September 1, 2026 |
| Glacier Point Road7,214 ft | Yosemite | typically sometime in May until sometime in November, plowing from around 15 April | Moves with the snow | May 13, 2026 |
| Backcountry vehicle route through Valle Grande to Valle San Antonio8,600 ft | Valles Caldera | 15 May to 15 November, with a backcountry vehicle pass from Recreation.gov | Fixed by rule | May 22, 2026 |
| Chief Mountain border crossing into Canada | Glacier | May 15 through September 30, hours vary | Fixed by rule | May 7, 2026 |
| Exit Glacier Road | Kenai Fjords | inaccessible to cars from late October to mid May, usually because of snow, and often still shut through mid May | Moves with the snow | July 1, 2026 |
| Heintooga Ridge Road | Great Smoky Mountains | 15 May to 31 October in the 2026 schedule | Published dates | April 20, 2026 |
| Highway 67 from Jacob Lake to the North Rim8,800 ft | Grand Canyon North Rim | the only paved way in, closed by snow through the winter and reopened in spring | Moves with the snow | September 1, 2026 |
| Moose-Wilson Road | Grand Teton | closed 1 November until mid May, on conditions, and unplowed from Death Canyon Road to Granite Canyon Trailhead | Moves with the snow | September 2, 2026 |
| North Rim Road and ranger station | Black Canyon | typically closes mid November and reopens in May | Moves with the snow | November 13, 2025 |
| North Rim visitor season | Grand Canyon North Rim | opened 15 May in 2026, with campground reservations running to 15 October | Published dates | September 1, 2026 |
| State Route 148 through the monument10,350 ft | Cedar Breaks | closed to vehicles from mid November to mid May on average, entirely on snowpack | Moves with the snow | September 2, 2026 |
| The park’s unpaved roads | Acadia | closed annually from 15 November through 14 May | Fixed by rule | May 19, 2025 |
| Wilderness Information Center, Marblemount | North Cascades | open daily 15 May to 10 October in 2026 | Published dates | June 5, 2026 |
| North Cascades Visitor Center, Newhalem | North Cascades | open daily 18 May to 27 September in 2026 | Published dates | June 5, 2026 |
| Denali Park Road, bus season | Denali | most of the single road can be travelled only by bus from 20 May to mid September | Fixed by rule | January 29, 2025 |
| Denali Visitor Center and Winter Visitor Center | Denali | the summer visitor centre ran to 23 September in 2026 and the winter one opened the next day | Published dates | August 27, 2026 |
| Moraine Park Campground, summer season | Rocky Mountain | opened 21 May 2026 and closes at noon on 19 October 2026, then reopens for winter camping | Published dates | June 24, 2026 |
| Beartooth Highway, US 212, and the Chief Joseph Scenic Byway, WY 29610,947 ft | Yellowstone | the Friday of Memorial Day weekend to mid October, outside the park and run by two state highway departments | Published dates | September 1, 2026 |
| Canyon Village to Tower Fall over Dunraven Pass8,859 ft | Yellowstone | 22 May to 12 October in the 2026 schedule, last to open and first to shut | Published dates | September 1, 2026 |
| Wheeler Peak Scenic Drive above Upper Lehman Creek10,000 ft | Great Basin | impassable in winter and gated at Upper Lehman Creek Campground, usually open by Memorial Day weekend | Moves with the snow | July 12, 2023 |
| Cedar Breaks Visitor Center | Cedar Breaks | routinely closed from mid October to late May, along with the vault toilets | Fixed by rule | September 2, 2026 |
| Mineral King Road7,500 ft | Sequoia and Kings Canyon | open seasonally from late May through October | Moves with the snow | September 2, 2025 |
| Park visitor centres | Glacier | most services open late May or early June and the visitor centres close in late September and early October | Fixed by rule | September 13, 2022 |
| The rest of the park road network | Great Basin | typically open between Memorial Day and late October | Moves with the snow | July 3, 2026 |
| White River Wilderness Information Center | Mount Rainier | generally open late May through mid October | Fixed by rule | August 31, 2026 |
| Trail Ridge Road12,183 ft | Rocky Mountain | closed to through travel from mid October to late May | Moves with the snow | January 2, 2025 |
| North Entrance Road | Crater Lake | nine miles to North Junction, closing 1 November or earlier if the snow arrives first | Moves with the snow | August 17, 2026 |
| Point Supreme Campground | Cedar Breaks | open seasonally, weather permitting, from June to mid September | Moves with the snow | September 2, 2026 |
| Tioga Road, Highway 120 across the park over Tioga Pass9,943 ft | Yosemite | typically late May or June until sometime in November, with plowing starting around 15 April | Moves with the snow | May 13, 2026 |
| Rock Harbor and Windigo visitor centres | Isle Royale | daily from 5 June to 19 September, and intermittently either side of that | Fixed by rule | June 6, 2026 |
| Lassen Volcanic National Park Highway, Highway 898,512 ft | Lassen Volcanic | no established opening date at all; clearing starts as early as mid March and takes about two months, and the road has opened as late as early July | Moves with the snow | May 24, 2026 |
| Obstruction Point Road6,150 ft | Olympic | weather and snow permitting, open from mid June through 15 October | Moves with the snow | May 26, 2026 |
| East Rim Drive7,100 ft | Crater Lake | closes on 1 November or earlier, then reopens in plowed segments through spring | Moves with the snow | August 17, 2026 |
| Pinnacles Road | Crater Lake | closes when East Rim Drive closes on 1 November, or earlier | Moves with the snow | August 17, 2026 |
| Going-to-the-Sun Road over Logan Pass6,646 ft | Glacier | late June at the earliest, closing around the third Monday of October | Moves with the snow | May 7, 2026 |
| Sunrise Road6,400 ft | Mount Rainier | usually opens in late June or early July and closes in late September to early October | Moves with the snow | December 5, 2025 |
| Crane Flat, Tamarack Flat, White Wolf, Yosemite Creek, Porcupine Flat and Bridalveil Creek campgrounds | Yosemite | July to somewhere between early September and early October depending which one | Moves with the snow | September 5, 2025 |
| Tuolumne Meadows Campground | Yosemite | about July to late September, and only after Tioga Road opens | Moves with the snow | September 5, 2025 |
| Longs Peak Campground | Rocky Mountain | typically opens in early July and closes in early September | Moves with the snow | June 24, 2026 |
| Old Fall River Road11,796 ft | Rocky Mountain | early July to early October, one way uphill and gravel the whole way | Moves with the snow | July 16, 2026 |
| Sunrise Visitor Center | Mount Rainier | open from early July to early September | Moves with the snow | December 5, 2025 |
| Groomed oversnow routes, snowcoach and snowmobile season | Yellowstone | 15 December to the first half of March in the 2026 to 2027 schedule, guided oversnow travel only | Published dates | September 1, 2026 |
| Antelope Flats, Deadmans Bar, Pilgrim Creek, Schwabacher and Two Ocean roads | Grand Teton | closed seasonally on conditions, with no published dates | Storm closures | September 2, 2026 |
| Denali Park Road in winter, mile 3 | Denali | closes on conditions at Park Headquarters, mile 3, once significant snow falls, and stays shut there for the rest of the winter | Storm closures | January 29, 2025 |
| Grassy Lake Road, John D. Rockefeller Jr. Memorial Parkway | Grand Teton | closes on conditions and is unplowed in winter west of Flagg Ranch, then opens to oversnow travel once there is enough snow | Storm closures | September 2, 2026 |
| Straight Fork Road and Heintooga Round Bottom Road | Great Smoky Mountains | both are listed as to be decided in the 2026 schedule, Straight Fork explicitly because of Hurricane Helene damage | Published dates | April 20, 2026 |
| Timber Creek Campground | Rocky Mountain | closes for the season at noon on 5 October 2026 | Published dates | June 24, 2026 |
| Bear Lake Road | Rocky Mountain | open year round, with snow and ice and traction control any time in winter and spring | Storm closures | July 16, 2026 |
| Cades Cove Loop Road | Great Smoky Mountains | open sunrise to sunset all year, and closed to vehicles every Wednesday from about May through September so it belongs to cyclists and walkers | Fixed by rule | January 21, 2026 |
| Cataloochee Road | Great Smoky Mountains | year round gravel, closed for snow, ice and other hazardous weather | Storm closures | April 20, 2026 |
| Going-to-the-Sun Road, West Glacier to Lake McDonald Lodge | Glacier | usually plowed and open year round, weather permitting | Storm closures | September 13, 2022 |
| Highway 62 and Munson Valley Road to Rim Village | Crater Lake | open year round, though sections can shut intermittently in heavy snow | Storm closures | August 17, 2026 |
| Hurricane Ridge Road5,242 ft | Olympic | plowed through the winter but closable at any hour, which is why the park runs a recorded phone line for it | Storm closures | May 26, 2026 |
| Lower Lehman Creek Campground | Great Basin | the only campground open year round; the rest close with winter | Fixed by rule | July 3, 2026 |
| Newfound Gap Road, US 441, and Little River Road5,046 ft | Great Smoky Mountains | open year round weather permitting, which at 5,046 feet means several closures a winter | Storm closures | April 20, 2026 |
| Nisqually Entrance to Paradise, winter gate season | Mount Rainier | the only winter vehicle access to the park, gated at Longmire overnight, with tyre chains required in every vehicle from 1 November to 1 May | Storm closures | August 11, 2026 |
| North Entrance to Northeast Entrance, Gardiner to Cooke City | Yellowstone | the only road in Yellowstone open to cars all year | Storm closures | September 1, 2026 |
| Skyline Drive3,680 ft | Shenandoah | open all year in principle, closed in sections whenever ice or fog makes it unsafe, sometimes for days | Storm closures | May 18, 2026 |
| South Rim | Grand Canyon North Rim | open 24 hours a day, 365 days a year, which is the reason the North Rim question is the one people actually search | Fixed by rule | December 13, 2025 |
| The 18 mile scenic drive to Rainbow Point9,115 ft | Bryce Canyon | no fixed winter closure, but temporary closures during and after snow storms until plowing is finished | Storm closures | August 14, 2026 |
| The two year round sections of Park Loop Road | Acadia | two short sections stay open all year, which is why Acadia is never entirely shut | Fixed by rule | May 19, 2025 |
| Upper Pines Campground, Yosemite Valley | Yosemite | the one Yosemite campground on reservations all year | Fixed by rule | September 5, 2025 |
| Zion-Mount Carmel Highway | Zion | kept open year round, but shut without notice for snow, ice, rockfall or congestion | Storm closures | June 9, 2026 |
The 16 states with a park season
Three different things govern an opening date, and which one applies changes what you should do about it. 7 states (Montana, Colorado, California, Washington, Oregon, Utah, Nevada) turn on plowing progress, so watch the snowpack and hold the booking. 8 states (Wyoming, Arizona, Alaska, Maine, New Mexico, Michigan, Tennessee, North Carolina) run on dates the park publishes in advance, so the calendar is real enough to plan against. One state (Virginia) has no seasonal closure at all, and the thing to watch there is an alert feed rather than a date.
The other 34 states
A state is in this vertical when a National Park Service unit inside it publishes a seasonal opening or closing, in its own words, on its own page. That is a stricter test than “has a park that gets snow”, and it is deliberately stricter than “has a road that closes”. Idaho is the case worth reading. Craters of the Moon genuinely closes its loop road for winter, and the park’s own page for that road currently reads that it is being worked on and to check back later. There is nothing to cite, so Idaho is out with that as the reason rather than in with a date we made up.
- Alabama. Little River Canyon National Preserve, Russell Cave National Monument and Horseshoe Bend all run year round, and none of them publishes a seasonal road, campground or visitor centre closure.
- Arkansas. Hot Springs National Park and Buffalo National River operate all year. The Buffalo access points and low water crossings shut for flooding rather than on a published seasonal date.
- Connecticut. Weir Farm National Historical Park is the state’s only National Park Service unit and its grounds and trails are open year round, with only the historic buildings on a seasonal schedule.
- Delaware. First State National Historical Park runs year round across its sites at Beaver Valley, Brandywine, the New Castle Court House and Fort Christina, none of which closes for a season.
- Florida. Everglades National Park, Biscayne and Dry Tortugas run all year. The Everglades wet and dry seasons change what is passable, but the park publishes no seasonal opening or closing dates for any road.
- Georgia. Cumberland Island National Seashore and Chattahoochee River National Recreation Area run year round. The Cumberland Island ferry timetable and the Chattahoochee water levels move, but neither is a published seasonal closure.
- Hawaii. Haleakala National Park and Hawaii Volcanoes National Park are open 24 hours a day all year. Their closures follow eruptions and are unscheduled, which is a different subject from a season.
- Idaho. Craters of the Moon genuinely closes its loop road for winter, and NPS’s own page for that road currently reads that it is being worked on and to check back later. There is no citable date, so Idaho stays out rather than carrying a number we invented.
- Illinois. Lincoln Home National Historic Site and Pullman National Historical Park are year round urban units, and the Lewis and Clark and Trail of Tears trails are routes rather than gated roads.
- Indiana. Indiana Dunes, Lincoln Boyhood and George Rogers Clark all run year round; the Dunes beach access changes with Lake Michigan conditions rather than with a published season.
- Iowa. Effigy Mounds National Monument and Herbert Hoover National Historic Site are open year round, and neither publishes a seasonal road, campground or visitor centre closure.
- Kansas. Tallgrass Prairie National Preserve, Fort Scott National Historic Site and Nicodemus all run year round, closing for storms rather than on any published seasonal date.
- Kentucky. Mammoth Cave and Cumberland Gap keep their surface roads open all year. The Mammoth Cave tour schedule does change by season, but a tour calendar is not a road opening.
- Louisiana. Jean Lafitte National Historical Park and Preserve and New Orleans Jazz National Historical Park both run year round, and Poverty Point closes for weather rather than for a season.
- Maryland. Assateague Island National Seashore, Antietam and the Chesapeake and Ohio Canal all run year round. The Assateague over sand vehicle route changes with storms rather than with a season.
- Massachusetts. Cape Cod National Seashore staffs its beaches seasonally and Minute Man and Lowell run year round, but no unit in the state publishes a seasonal road, campground or visitor centre closure.
- Minnesota. Voyageurs is genuinely seasonal, since Rainy Lake and Kabetogama freeze and the ice roads across them come and go, but the park publishes ice conditions rather than opening dates, and Pipestone and Grand Portage run year round.
- Mississippi. The Natchez Trace Parkway and Gulf Islands National Seashore run year round, and Vicksburg National Military Park closes for storms rather than on a published seasonal date.
- Missouri. Ozark National Scenic Riverways and Gateway Arch National Park run year round. The Ozark access points close on Current River and Jacks Fork levels rather than on a published season.
- Nebraska. Scotts Bluff National Monument and Homestead National Historical Park are open year round. The Scotts Bluff Summit Road closes for ice and wind rather than on any published seasonal date.
- New Hampshire. The grounds and trails at Saint-Gaudens National Historical Park, the state’s only National Park Service unit, are open year round during daylight hours. Only its buildings are seasonal, and the park publishes those as hours rather than dates.
- New Jersey. Delaware Water Gap National Recreation Area and Sandy Hook run year round. Old Mine Road and the Sandy Hook beaches close for flood and for staffing rather than on a published season.
- New York. Fire Island National Seashore, the Gateway units at Jamaica Bay and Staten Island, and the Hudson Valley sites all run year round. Their seasonal changes are lifeguard and ferry timetables rather than gates.
- North Dakota. Theodore Roosevelt National Park is open 24 hours a day year round in both its North Unit and its South Unit, and Knife River Indian Villages runs year round too. Both close for weather rather than for a season.
- Ohio. Cuyahoga Valley National Park, Hopewell Culture and Perry’s Victory all run year round. The Cuyahoga Valley Scenic Railroad has a season, but that is a concession timetable rather than a park road.
- Oklahoma. Chickasaw National Recreation Area and the Washita Battlefield both run year round, and the Lake of the Arbuckles swimming areas are staffed seasonally rather than gated.
- Pennsylvania. Gettysburg National Military Park, Valley Forge and Independence National Historical Park all run year round, and none of them publishes a seasonal road or facility closure.
- Rhode Island. Roger Williams National Memorial and Blackstone River Valley National Historical Park both run year round, and Touro Synagogue is on a tour timetable rather than a seasonal closure.
- South Carolina. Congaree National Park and Fort Sumter and Fort Moultrie run year round. The Congaree boardwalk closes when the Congaree River floods it rather than on any published seasonal date.
- South Dakota. Badlands National Park, Wind Cave and Mount Rushmore are open year round. The Sage Creek Rim Road is gravel and closes for mud and snow, but Badlands publishes no seasonal dates for it.
- Texas. Big Bend National Park and Guadalupe Mountains National Park run year round. The River Road and the Guadalupe trails close for flood, fire and wind rather than on a published seasonal date.
- Vermont. The grounds at Marsh-Billings-Rockefeller National Historical Park, the state’s only National Park Service unit, are open year round. Only its guided tour programme, which runs May to October, is seasonal.
- West Virginia. New River Gorge National Park and Preserve and Harpers Ferry National Historical Park run year round, and the Gauley River access points close on water releases rather than on a season.
- Wisconsin. Apostle Islands National Lakeshore runs year round. Access to the mainland sea caves depends on Lake Superior ice, which the park publishes as a hazard advisory rather than as a season.
The four road pages people actually search for
Each of these is the park’s own page, and each of them is the only thing on the internet that knows what its road is doing this afternoon. The other 20 parks in this vertical have the same block on their state page.
Park road opening FAQ
The rest of the mountain season
Every season, date and quotation on this page comes from a National Park Service page on www.nps.gov, read at build time on 3 September 2026 and shown with the park’s own last updated stamp rather than ours. NPS material is a work of the United States government and is in the public domain. For today, go to the park’s own status page. In Glacier National Park’s own words about its own status map: “This report contains the most recent information available for road, hiker/biker, and entrance closures as well as snowplow status. It may be outdated and inaccurate as our information can change quickly.” Park openings by state