Contra Costa County Public Works

Contra Costa County Public Works The Public Works Department provides the construction, maintenance & improvement of infrastructure

Public Works will apply pavement surface treatment to various residential roads in Rodeo starting Monday, 6/22/26, thr...
06/18/2026

Public Works will apply pavement surface treatment to various residential roads in Rodeo starting Monday, 6/22/26, through Friday, 11/25/26, Monday - Friday, from 7:00 am to 5:00 pm (excluding holidays).

Traffic control will be used with restrictions in place to minimize impacts during commuting hours. Message boards will alert drivers about the work. Drivers should expect delays through the construction zone and consider alternative routes during working hours.

The project is intended to enhance existing roadways and extend the life of the County roadway network. For more information regarding this work, please visit https://bit.ly/3Uq3a1C.



Caltrans Bay Area-District 4 Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

(Update 6/18/26) This work has been completed ahead of schedule. Thank you for your patience. To report service issues ...
06/15/2026

(Update 6/18/26) This work has been completed ahead of schedule. Thank you for your patience. To report service issues in unincorporated Contra Costa County, visit: https://bit.ly/479e9kM Take care and stay safe!

Public Works crews will install rumble strips on Byron Highway between Byron Hot Springs Road and Bruns Road, Monday, June 15, through Thursday, June 18, 2026, from 9:00 a.m. - 4:00 p.m. Electronic message boards are placed to alert drivers to scheduled work. There will be traffic control throughout the work area, and lane closures will be required during working hours. Drivers should expect delays of 20 -30 minutes. The purpose of the rumble strips is to increase driver awareness and safety when travelling through this commute corridor. Please drive carefully through the work zone and stay safe!



Caltrans Bay Area-District 4 Contra Costa County Flood Control DistrictContra Costa Clean Water ProgramByron Airport - C83 Buchanan Field - CCR City of Brentwood - Local Government

Public Works crews will perform grinding and asphalt replacement work on Parker Avenue, between San Pablo Avenue and 7...
06/10/2026

Public Works crews will perform grinding and asphalt replacement work on Parker Avenue, between San Pablo Avenue and 7th Street in Rodeo, starting Thursday, June 11, 2026, through Thursday, June 25, 2026, from 8:00 a.m. to 4:00 p.m., Monday through Thursday, weather permitting. Traffic control will be used. Delays of 15–20 minutes are expected. Please plan accordingly, drive carefully, and stay safe!

To learn more about this work and other projects, programs, and services, please visit our website at https://bit.ly/3vP3Sgq, or tap the link in our bio!



Caltrans Bay Area-District 4 Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

Public Works' Signal Shop Lead Electrician, Ron Alderman, and Director Warren Lai, were excited to attend the Countywi...
06/09/2026

Public Works' Signal Shop Lead Electrician, Ron Alderman, and Director Warren Lai, were excited to attend the Countywide Smart Signals launch event hosted by CCTA in Danville recently. Many of the 800 traffic signals we maintain across the county use older equipment, making them challenging to service, especially during inclement weather. Also, they are not well-connected to each other. That makes it harder to coordinate signals, respond to changing traffic, and improve safety for people walking and biking. These upgrades will bring intersections up to a modern standard, making them safer to maintain while helping traffic move more smoothly throughout the county.



Caltrans Bay Area-District 4 Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

Progress continues on the installation of the new traffic signal at the intersection of Mt. Diablo Scenic Boulevar...
06/03/2026

Progress continues on the installation of the new traffic signal at the intersection of Mt. Diablo Scenic Boulevard and Diablo Road/Blackhawk Road. This work is scheduled to continue through Friday, 7/17/26, from 7 am - 5 pm, Monday - Friday. Delays of 5-10 minutes are expected during working hours due to lane closures and traffic control through the work area.

To learn more about this project, please visit https://bit.ly/4rkpfwz or tap the link in our bio!



Town of Danville, CA Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

Public Works is proud to serve as a polling place for the Statewide Direct Primary Elections today. The lobby at our ...
06/02/2026

Public Works is proud to serve as a polling place for the Statewide Direct Primary Elections today. The lobby at our office, 255 Glacier Drive, Martinez, will be open until 8 pm tonight. So, don't forget to vote and make your voice count.



Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

Public Works, in conjunction with the Contra Costa County Fire Protection District, will perform vegetation mitigatio...
05/28/2026

Public Works, in conjunction with the Contra Costa County Fire Protection District, will perform vegetation mitigation work on San Pablo Dam Road, between Wildcat Canyon Road/Bear Creek Road and Tri Lane, starting Monday, June 1, 2026, through Thursday, June 11, 2026, from 9:00 a.m. through 3:30 p.m., Monday through Thursday. Electronic Message Boards are in place to notify the public of the work. Traffic control measures will be implemented to direct vehicles and bicyclists safely through the work area. Drivers should expect delays of up to 20 minutes.

For more information about this work, other projects, and how to report service issues in your area, please visit our website at https://bit.ly/3vP3Sgq or tap the link in our bio!



Contra Costa County Fire Protection District
Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83 Caltrans Bay Area-District 4 City of Orinda - Local Government

Today, our Director, Warren Lai, made a presentation in honor of National Public Works Week at the Contra Costa County B...
05/19/2026

Today, our Director, Warren Lai, made a presentation in honor of National Public Works Week at the Contra Costa County Board of Supervisors meeting. During his presentation, he stated that the heart of our department is our employees. Their passion & dedication to delivering quality projects, programs & services to the people of Contra Costa County shows how we remain "Rooted in Service, Powered by Community" and grateful for everything they do.

To hear what Public Works means to our staff, watch: https://youtu.be/02qp---q0yQ?si=68SBkF1FC18gYXDp or tap the Watch "Inside Public Works" Series link in our bio!



Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

It's National Public Works Week! This year's theme, “Rooted in Service, Powered by Community,” acknowledges that the ro...
05/18/2026

It's National Public Works Week! This year's theme, “Rooted in Service, Powered by Community,” acknowledges that the roots of service run deep in public works. Tune in tomorrow to see our Director, Warren Lai, make a presentation at the Board of Supervisors meeting, and don't forget to follow us as we continue to bring you the latest news about our department, including project updates, staff highlights, and career opportunities all year long!

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Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83

We're Hiring! Public Works is accepting applications to fill one (1) Departmental Human Resources Supervisor position i...
05/14/2026

We're Hiring! Public Works is accepting applications to fill one (1) Departmental Human Resources Supervisor position in our Administrative Services Division until Wednesday, 5/20/26 at 11:59 pm. To learn more about this opportunity and apply, please visit https://bit.ly/4wrp6eu or tap the link in our bio!



Contra Costa County Flood Control District Contra Costa Clean Water Program Buchanan Field - CCR Byron Airport - C83 Workforce Development Board of Contra Costa County

Address

255 Glacier
Martinez, CA
94553

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 12pm
1pm - 4pm

Telephone

+19253132000

Website

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