Work Scheduled to Resume for SR-20 Omega Curves Project


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District:District 3 - Marysville,
Amarjeet S. Benipal, District Director
Contact: John O’Connell,
Phone:(530) 701-9459


Nevada County – Caltrans is alerting State Route 20 (SR-20) motorists in Nevada County to expect one-way traffic control starting Monday, May 1 for the resumption of a major road construction project.

Working hours are scheduled as follows:

  • Monday, May 1 – Friday, May 5: 7 a.m. – 7 p.m.
  • Monday, May 8 – Friday, May 12: 6 a.m. - 5 p.m.
  • Monday, May 15 – TBA:6 a.m. - 5 p.m. and 7 p.m. to 5 a.m.

Motorists should expect delays of up to 20-25 minutes at multiple locations along a 14-mile stretch of highway between Conservation Road and Lowell Hill with one-way traffic control led by a pilot car. Construction crews are installing or rehabilitating drainage, performing earth work to widen sections of the roadway and preparing for major dirt fill work to begin.

Motorists are advised to expect travel delays on SR-20 through the summer and fall months while these major improvements are under way. The schedule is subject to change due to weather, equipment or material availability, or other unexpected events.

The work is part of the $62.5 million Omega Curves project (see map), which will improve safety and reduce collisions on SR-20 by realigning curves on two non-contiguous segments near White Cloud and Lowell Hill, widening shoulders, improving the highway’s sight distance and adding designated left-turn lanes near Conservation Road and Washington Road. In addition, three turnouts will be added where slow-moving vehicles can allow motorists to safely pass, while also serving as traffic-enforcement locations for the California Highway Patrol.

Granite Construction, Inc. of Sacramento is the prime contractor for the Omega Curves safety project, which is expected to be completed this fall. For project updates, please visit

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 will issue construction updates on Twitter @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.

map of route highway 20