Highway 84 Emergency Storm Damage Repair

Project Update

One-way traffic control open as of July 27, 2023
Full traffic opening, scheduled March 2024 - May 2024 if weather/material delays

Our crews have been working tirelessly each day, repairing the slope and constructing a retaining structure on State Route 84 near Woodside. A temporary one-way traffic control opened on July 27, 2023, with the full reopening of SR-84 tentatively scheduled for between March 2024 and May 2024 depending on weather and/or material delays. 

In March, a landslide damaged a portion of State Route 84 at Portola Road near the town of Woodside. To keep you informed, Caltrans participated in a town hall meeting with local and state elected officials. During the meeting, we provided an update on the progress of the work being done on State Route 84. We encourage you to watch the presentation to learn more about the project.  For the latest updates please sign up for our weekly newsletter by submitting your email address at SR84slideupdates@dot.ca.gov.

SR-84: Project Site Overview (June 20, 2023)

Project Summary

Repair of Highway 84 at Post Mile 17.9 due to a landslide that has closed the two-lane highway between Foxhill Road and Portola Road. The slide resulted in approximately 250 feet of roadway failing on 09 March 2023. The road was closed on 11 March 2023. State Route 84 re-opened to one-way traffic control on July 27, 2023. Caltrans will continue permanent slide repairs behind the protective road barriers.

This is an active construction area. Please use caution as crews continue repairs behind the barriers.

View the Project Fact Sheet

Map showing the location of the mudslide on State Route 84 near Woodside in San Mateo county.Work Description

Clearing the site of compromised trees for worker safety and to access the site. Perform geotechnical borings to determine the location of the slip plane and repair method. Repair slope and construct retaining structure. Reconstruct the roadway structural section. Repair drainage system(s). Erosion control.

Driver Benefits

Restoration of roadway section for the traveling public. Restoration of drainage systems to carry water off the roadway.

Roadway Closure

A temporary one-way traffic control opened on July 27, 2023. Full traffic opening is tentatively scheduled for December 2023 - April 2024 depending on if weather delays.

Highway 84 Emergency Storm Damage Repair Project Video

Highway 84 Emergency Storm Damage Repair - Recent Photos

Project Contact

For the latest information on the project, please contact our team at SR84slideupdates@dot.ca.gov.

Alejandro Lopez - Caltrans Public Information Officer