Tioga and Glacier Point Roads Plowing Update

Tioga Road below Olmsted Point.

 

Tioga Road

July 22, 2023

Tioga Road opened on Saturday, July 22, 2023. While vault and portable toilets are available, there is no water, no store or food service, and no fuel. Be sure to bring all the food and water you need. The visitor center and wilderness center in Tuolumne Meadows are open.

Tioga Road has some damage, so watch for one-lane sections, with delays up to 15 minutes just east of Olmsted Point.

There is no estimate when Tamarack Flat or Porcupine Flat Campgrounds will open. Other campgrounds on Tioga Road will not open this year.

It's still snowy up there! Meadows and some trails are flooded. Snow is persisting in some shady areas as low as 8,000 feet, with extensive, deep snow coverage by 9,000 feet. Stay on trails to protect growing plants and plan for wet feet. Marked trails may be hard or impossible to follow; hikers should have GPS, as well as map and compass (and know how to use them).

Tioga Road is typically open to vehicles from late May or June until sometime in November. Plowing typically begins around April 15.

In some years, Tioga Road opens to cycling one or more days before opening to vehicles. If this occurs in 2024, we'll provide that information here.

Glacier Point Road

July 15, 2023

Glacier Point Road opened on July 15, 2023. Expect 30-minute delays, Monday through Friday, 6 am to 9 pm.

Parking at Glacier Point and throughout the park is limited. Arrive early in the morning to avoid long delays and full parking lots.

Glacier Point Road is typically open to vehicles from sometime in May until sometime in November. Plowing typically begins around April 15.

In some years, Glacier Point Road opens to cycling one or more days before opening to vehicles. If this occurs in 2024, we'll provide that information here.

 

Answers to Frequently Asked Questions

• How can I drive to Yosemite from Las Vegas or Death Valley when the Tioga Road is closed?
• What are the historical opening dates for the Tioga and Glacier Point Roads?
• What are the historical opening dates for Sonora Pass (Highway 108) and Ebbetts Pass (Highway 4)?

Why does it take so long to open the roads?

These are some common causes for slow progress of Tioga Road plowing:

• Avalanche zones (26 potential areas). The Olmsted Point avalanche zone requires careful work, including application of charcoal over the snow to help with melting and blasting the snow slab to make it safer for personnel.
• Heavy snow pack slows the whole operation.
• Trees that have fallen across the road and been buried in the snow can cause substantial damage to equipment and result in a stop to all operations until they're cleared.
• Rockfalls buried by the snow can cause substantial damage to the equipment and result in a stop to all operations.
• Snow storms during the opening require a stop to Tioga Road operations in order to plow and sand park roads that are open.

Even after plowing is complete, trash collection, functioning restrooms, and adequate staffing must be in place to prevent harm to park resources.

For Tioga Road, once plows reach Tioga Pass, just one lane is plowed. Additional work is still required before the road can open:

Crews plow to the full width of Tioga Road and roads leading to critical infrastructure. During this time, several avalanche zones typically remain active.

Crews then shovel out infrastructure and begin the process of turning on drinking water and sewer systems. Meanwhile, other crews remove trees in danger of falling on the road and in developed areas, clear culverts on side roads, and replace signs.

Crews then work on setting up or de-winterizing buildings. Plowing and culvert clearing continues, and crews clear ditches and fill potholes.Just prior to opening, staff set up operations at the entrance station, wilderness/visitor center, and move into housing.

Will I be able to ride a bicycle on the Tioga or Glacier Point Roads before they open to cars?

In some years, these roads may be open during limited periods to bicycles prior to opening to cars. Any updates regarding pre-opening access on these roads will appear on this webpage. Unless otherwise posted here, both roads are closed to cyclists if they are closed to vehicles.

 

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  Olmsted Point Plowing

  Every spring, both visitors and locals look forward to the opening of the Tioga Road, a high-elevation pass that crosses Yosemite National Park. Get a glimpse of what it takes to clear snow and ice from a section of the highway known for dangerous avalanches.

  Duration:

  3 minutes, 35 seconds