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.

Upcoming Work

Location: Intersection of Moody St. and Lincoln Ave. in the City of Cypress (see map below)

A bypass system will be installed to reroute sewer flow and maintain service to the community. Following installation, manhole rehabilitation will take place. A mix of day and night work may be needed to complete this phase.

When: Starting as early as Monday, October 27 and lasting approximately one month.*

Hours: Monday–Friday

• Day: 8:30 a.m.–4:30 p.m.
• Night: 8:00 p.m.–6:00 a.m.

What to Expect:

• Reduced lanes on Moody St. between Camp St. and New York Ave.
• Left turns from northbound Moody St. onto Lincoln Ave. will be restricted—follow all posted signs
• Thru traffic will remain open in all directions
• Permanent traffic control will remain in place until work is completed
• Crosswalks may be closed intermittently
• Increased activity, dust, and noise levels

Location: Starting near the intersection of Denni St. and Orange Ave., and 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: Starting as early as Sunday, October 26 and lasting until the project route is complete.*
• Hours: Sunday-Friday, 8:00 p.m.-6:00 a.m.
• Impacts: 
  • Reduced traffic lanes
  • Temporary traffic control while work is being performed
  • Increased activity, dust, and noise levels

Current Work

Location: Intersection of Moody St. and Crescent Ave.

A bypass system is in place to reroute sewer flow and maintain service to the community while manhole rehabilitation work is underway.

• 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

 *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