Costa Mesa Sewer Rehabilitation Along the I-405

CONSTRUCTION UPDATE

🚧STREETS NEAR WORK AREA:  South Coast Drive, San Leandro Lane, Concord Street

The sewer pipeline crossing under the 405 freeway will be rehabilitated. Vactor trucks will be used to vacuum wastewater out of the pipeline from a nearby manhole to keep flows out of the section of pipe that will be rehabilitated.

When:  One night only, anticipated to occur in July.  Exact date will be provided when schedule is confirmed.

Hours: 9 p.m. – 6 a.m.

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

RECENTLY COMPLETED WORK

🚧STREETS NEAR WORK AREA:  Fairview Road, Charleston Street

Pipeline rehabilitation using the cured-in-place-pipe (CIPP) method is ongoing. A liner has been inserted into the pipeline and is currently curing.   

When: July 7-10, 2025- COMPLETED

🚧STREETS NEAR WORK AREA:  Bear Street, Olympic Avenue, Tanana Place

There will be two separate CIPP segments. One segment is near Olympic Avenue and Bear Street. The second is near Bear Street and Tanana Place.

When:  June 16 – 20, 2025 – COMPLETED

🚧STREETS NEAR WORK AREA:  Concord Street, Tanana Place, Yukon Avenue

When:  June 25 – 28, 2025 – COMPLETED

About Cured-in-Place Pipe (CIPP)

A pre-measured liner is delivered in a refrigerated truck and inserted through a manhole opening into the existing pipeline. After the liner has been inserted, it is filled with water that is heated to a certain temperature and cured for several hours. When fully cured, the liner now acts as the new pipeline. Once the CIPP operation begins, it cannot be stopped until completed, thus requiring the 24/7 continuous work. Crews will be onsite for monitoring throughout the entire process.