Cypress Trunk Sewer

Cypress Trunk Sewer

We’re making great progress on the Cypress Trunk Sewer Project! Crews are hard at work throughout the project area, keeping things on track and moving safely. Soon, we’ll be headed to the City of Los Alamitos, where we plan to start some quick prep work before the end of the year, similar to what we’ve done in Cypress.

These upgrades are a big step toward keeping our regional sewer system reliable and ready for the future. Our crews are working efficiently to minimize impacts on nearby neighborhoods while completing this important work.

Here’s what you need to know about the upcoming work:

City of Cypress:
Location: Starting near the intersection of Denni. St. and Ball Rd., moving south on Denni. St. (see map below).

Work will take place during low-flow hours at night and include pipe inspection, cleaning, and grouting.

• When: Ongoing–end of October.*
• Hours: Sunday–Friday
  
  • 8:00 p.m.– 6:00 a.m.*
• Impacts:
  • Reduced traffic lanes
  • Traffic control while work is being performed
  • Increased activity, dust, and noise levels

City of La Palma: 
Location: Intersection of Moody St. and Crescent Ave. (see map below)

Work includes the installation of a bypass system to reroute sewer flow and maintain service to the community. Manhole rehabilitation work will take place while the bypass is in place. After this work is complete, crews will begin preparing for additional bypass work at the intersection of Moody St. and Lincoln Ave. in the City of Cypress.

• When: Ongoing–Fri., October 17*
• Hours: Monday–Friday
  • 8:30 a.m.–4:30 p.m.*
• Impacts:
  • Reduced traffic lanes
  • Permanent traffic control, including k-rail around the work area
  • Left turns in all directions may be restricted—follow all posted signs. Thru traffic will remain open in all directions.
  • Crosswalks may be closed intermittently during work
  • Flaggers will be onsite to assist with directing traffic
  • Increased activity, dust, and noise levels

 *All dates and times are subject to change due to operational factors or inclement weather.

Project Description:

The regional sewer line in the cities of Cypress, Los Alamitos, and La Palma is approximately 50 years old and in need of upgrades. The Cypress Trunk Sewer Project will focus on enhancing about 7 miles of sewer, replacing portions of the pipe with larger diameter pipe to increase the capacity, or rehabilitating other segments of pipe to extend the life of the sewer system. Approximately 100 manholes will also be replaced and/or rehabilitated. These repairs will extend the life of the sewer pipes by another 50 years.

Schedule:
Construction is anticipated to begin in Summer 2025 and last approximately 3 years.

Local Sewer Provider: 

• City of Cypress – Maintenance Division – (714) 229-6760
• City of La Palma – Public Works Division – (714) 690-3310
• City of Los Alamitos – Rossmoor / Los Alamitos Area Sewer District – (562) 431-2223