Eastbound State Route 20 Closure Scheduled After Labor Day

District: District 3 - Marysville
Sergio Aceves, District 3 Director
Contact: Jeremy Linder (530) 701-5209

PLACER/NEVADA COUNTIES - Caltrans is alerting motorists of an eastbound State Route 20 (SR 20) closure scheduled after the Labor Day holiday weekend between the Omega Scenic Overlook and the Interstate 80 (I-80) junction as part of the $112 million Yuba Pass Separation Overhead Bridge Project.

The current closure remains in place until 6 a.m. Friday. Crews will reopen SR 20 for the Labor Day holiday weekend and are scheduled to close eastbound SR 20 again from 8 p.m. Tuesday, September 8 through 6 a.m. Sunday, September 13.

The closure is necessary to continue falsework installation for the section that crosses directly over SR 20. Falsework is a temporary structural support to hold up the formwork until concrete is poured and the new bridge is strong enough to support itself.

The eastbound I-80 off-ramp to SR 20 will also be closed during this time. Westbound SR 20 will remain open for travel between the I-80 junction and Nevada City. The schedule is subject to change or be delayed due to weather, availability of materials or other unexpected events.

The following detours are available for motorists:

• Drivers in the Nevada City/Grass Valley area looking to connect to I-80 can detour southbound on State Route 49 (SR 49) to connect with I-80 in Auburn or southbound on State Route 174 to connect with I-80 in Colfax. Large trucks are directed to only use SR 49.

• Eastbound I-80 motorists looking to connect to SR 20 will detour to Eagle Lakes Road and head back on westbound I-80 to reach the westbound SR 20 off-ramp.

The extended lane closures will help minimize the duration of the work and improve worker safety. Additional closures are scheduled through October.

Flatiron Dragados of Concord is the prime contractor. The project will replace the existing bridge and improve freight efficiency along I-80 by increasing the load-carrying capacity for extra-legal load trucks. The project also includes construction of median barriers, upgraded drainage and the installation of roadway weather information systems. Work is expected to be completed by winter 2027.

Caltrans District 3 is responsible for maintaining and operating 4,385 lane miles in 11 Sacramento Valley and Northern Sierra counties. Caltrans reminds motorists to "Be Work Zone Alert" and slow in construction zones for the safety of travelers and crews performing these improvements.

The department issues construction updates on X @CaltransDist3 and on Facebook at CaltransDistrict3. For real-time traffic, click on Caltrans' QuickMap or download the QuickMap app from the App Store or Google Play.

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