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25th Avenue Sanitary Sewer Relief Line
Project Name: 25th Avenue Sanitary Sewer Relief Line Project  
     
Impacted Areas
  • 25th Avenue: Flores Street to South Delaware Street (front entrance of County Event Center)
     
  • El Camino Real: Intersection of El Camino Real and 25th Avenue

Project Construction Duration: 6 months

Work Hours:  8:00pm - 5:00am, Sunday - Friday

Short Description of Work:  The 25th Avenue Sanitary Sewer Relief Line Project (Project) site is located along 25th Avenue between Flores Street and South Delaware Street in the City of San Mateo.  The project includes the construction of a new sanitary sewer relief pipeline ranging in size from 21 inches to 30 inches.

The Project’s primary objective is providing future relief capacity to the existing 18-inch sanitary sewer in El Camino Real during wet weather events as well as capacity for accommodating planned upstream pipeline improvement projects to minimize the potential of sanitary sewer overflows.

The proposed sewer alignment would cross under El Camino Real and Caltrain tracks at 25th Avenue and tie into the future downstream sanitary sewer improvements at South Delaware Street.

Benefits of Work:  Reduce potential sanitary sewer overflows in the City

Expected Impact:  Short term traffic, street parking, and pedestrian impacts during construction

Project Status:             
  • Traffic Control near Palm Ave. will be changed soon to reestablish a portion of the street parking.
  • The work from El Camino Real to S. Delaware is scheduled for completion by July.
  • Open-cut trenching, to allow installation of the sewer, is scheduled to begin within the next two weeks between Flores & El Camino Real.
  • Eastbound 25th Ave from Flores to El Camino Real will be closed from 9:00pm - 5:00am on working nights.  Westbound 25th Ave from El Camino Real to Flores will be closed from 11:00pm - 5:00am on working nights.  Detours will be in place for safety.

Project Manager:  Tim Karlstrand, Project Manager
Phone: (650) 522-7300
Email:


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San Mateo City Hall – 330 West 20th Avenue, San Mateo, CA 94403

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