California Department of Transportation (Caltrans) crews will temporarily work from 7 p.m. to 6 a.m. on State Route 99 in Gridley. Photo courtesy of California Department of Transportation (Caltrans)

GRIDLEY, CA (MPG) – The California Department of Transportation (Caltrans) is alerting motorists that overnight construction work on State Route 99 (SR 99) in Gridley began April 13, after press time, as part of a major roadway improvement project.

Crews will work from 7 p.m. to 6 a.m. between Hollis Lane and Arch Street in downtown Gridley.

Work will include underground drainage installation, clearing operations and the demolition of curbs and sidewalks. Traffic control will be in place during construction hours. Motorists should be prepared for short delays and drive with caution through the work zone.

The next two weeks of scheduled night work include utility locating at multiple locations along the corridor and stump removal from Hollis Lane to Standish Lane. Saw cutting for drainage will also be conducted in the Tungsten area, as well as clearing brush from Hollis Lane to Archer Avenue.

This is the first phase of a $30-million project to rehabilitate the pavement and upgrade the corridor’s Transportation Management System (TMS), drainage and pedestrian access. The project includes improvements to meet current Americans with Disabilities Act (ADA) standards.

Traffic control will remain in place as needed throughout the summer as construction progresses. The project is expected to be completed by October 2026.

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 updates on X @CaltransDist3 and on Facebook at CaltransDistrict3. For real-time traffic information, download the QuickMap app from the App Store or Google Play.