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Work On Big Oak Flat Tunnels At Yosemite National Park Could Lead To Traffic Snarls

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By NPT Staff - February 13th, 2015

Much-needed repairs to the Big Oak Flat Tunnels in Yosemite National Park likely will delay your travel to the park during the next three months if you're entering along Highway 120, known as the Big Oak Flat Road inside the western side of the park.

Park officials say the work on the tunnels is scheduled to begin on Tuesday and run to May 20, although no construction is scheduled to take place during holidays.

Most of the work on the historic tunnels, which were completed in 1937, will take place inside them. As a result, during the construction period there will be incremental traffic delays. The work is part of the Big Oak Flat Tunnel Preservation Project and will include repairs to sections of the tunnel wall, floor, and ceiling, sealing of tunnel linings, improving the drainage system, and cleaning the interior of the length of the tunnel.

Traffic delays will be scheduled throughout the duration of the construction project. However, no delays will occur over holidays. Throughout the project, there will be controlled traffic and pilot car operations. Park officials are urging the public to drive with caution during the duration of the construction.

The schedule for the traffic delays is: 

Sunday evenings from 10 p.m. to Friday afternoons at 4:30 p.m.

-10 p.m. to 6 a.m., 2-hour delays

-6 a.m. to 8 p.m., 15-minute delays

-8 p.m. to 10 p.m., 30-minute delays

Weekend traffic delays are not anticipated at this time. However, this could change, pending construction phasing and progression.

 

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