Caltrans Begins Work on Interstate 80 Auxiliary Lane and Fifth Lane


Interstate 80

District: District 3 - Marysville
Amarjeet S. Benipal, District Director                        
Contact: Jeremy Linder
Phone: (530) 701-5209


Roseville/Rocklin – Caltrans is alerting motorists of upcoming lane and shoulder closures along Interstate 80 (I-80) as crews begin construction on the I-80 Auxiliary and Fifth Lane Project in Placer County.

Motorists can expect various lane closures on eastbound I-80 between the State Route 65 (SR-65) junction and Rocklin Road from 9 p.m. to 5 a.m. tonight and Friday night. Crews are removing the existing striping and adding temporary striping to shift the lanes.

Shoulder closures will be in place from 7 a.m. to 4 p.m. Monday, August 14 through Friday, August 18 for temporary fencing installation. Work will also be performed along westbound I-80 between Douglas Boulevard and Riverside Avenue.

The following week, crews will install drainage systems, temporary k-rail and begin tree removal. Motorists can expect various lane and shoulder closures  from 9 p.m. to 5 a.m. Monday, August 21 through Friday, August 25.
Ghilotti Construction Company, Inc. of Santa Rosa is the prime contractor. Project completion is expected by summer 2024. The schedule is subject to change due to weather, equipment or material availability or other unexpected events.

The work is part of a $49.5 million project and will construct an auxiliary lane along eastbound I-80 between SR-65 and Rocklin Road and include a two-lane off-ramp. A fifth lane will also be constructed on westbound I-80 between Douglas Boulevard and Riverside Avenue and include reconfiguring the Douglas off-ramp from 2-lanes to 1-lane.

The project includes $11.5 million in funding from Senate Bill 1 (SB 1), the Road Repair and Accountability Act of 2017. SB 1 provides $5 billion in transportation funding annually that is shared equally between state and local agencies. Road projects progress through construction phases more quickly based on the availability of SB 1 funds, including projects that are partially funded by SB 1. To view the latest news and information on state and federal infrastructure investments, visit, which contains data on state and federal funding.

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 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 highway 80

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