Cypress Trunk Sewer

Cypress Trunk Sewer

Crews are hard at work keeping construction on track on the Cypress Trunk Sewer Project!  These upgrades are a big step toward keeping our regional sewer system reliable and ready for the future.

City of La Palma

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

A bypass system is in place to reroute sewer flow and maintain service to the community while manhole rehabilitation work is underway. Due to unexpected site conditions, intersection work at Moody St. and Crescent Ave. has been extended.

• When: Ongoing–end of October*
• 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

After this phase of work is completed, preparation will begin for additional bypass work at the intersection of Moody St. and Lincoln Ave. in the City of Cypress, starting as early as Monday, October 27. During this work, expect reduced traffic lanes, restricted left turns, and occasional crosswalk closures.

City of Cypress:

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

Pipe inspection, cleaning, and grouting will occur at night during low flow.

• 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

 *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