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Upas Street Pipeline Replacement Project

Project Overview

The Upas Street Pipeline, Park Boulevard Pipeline and 5th Avenue Pipeline are more than 70 years old and are reaching the end of their useful lifecycle. They are badly deteriorated and have a recent history of leakage and pipe breaks.

The Upas Street pipeline also crosses vast open space areas that are difficult or impossible to access for routine maintenance and repairs, and has numerous direct service connections that must be relocated to a new, smaller distribution pipeline for consistency with current codes and design standards.

The project will improve water delivery system reliability; increase operational flexibility; reduce overall maintenance needs and costs; and substantially reduce the potential for failure, major pipeline repairs and service shut-downs. The project scope includes:

  • Replacing approximately 5.4 miles (28,500 linear feet) of fragile and deteriorating cast iron water mains along Upas Street, Park Boulevard and 5th Avenue, reducing the potential of pipeline failures.
  • Replacing Pressure Regulating Stations at West Upas Street and Brant Street; at Upas Street and Hawk Street; and at Upas Street and Park Boulevard, bringing the facilities up to current standards.
  • Installing a new Pressure Regulating Station at Upas Street and 7th Avenue, providing operation flexibility and enhancing system reliability.

Photo Gallery

(Click images for larger view)

Anticipated Schedule

  • Phase 1 Construction Schedule:
    • Park Blvd. from Upas Street to Robinson Ave. (Complete)
    • 5th Ave. from Upas Street to Robinson Ave. (Complete)
  • Phase 2 Construction Schedule (Fall 2015 through Spring 2016*):
    • Cabrillo Canyon Trail Seventh Avenue to Vermont Street (Complete)
    • Upas Street (Trenchless Pipe Installation) Seventh Avenue to Vermont Street
    • Upas Street Fifth Avenue to Front Street
    • W. Upas Street Pacific Coast Highway (north) to Pacific Coast Highway (south)
    • Sassafras India Street to Kettner Blvd.
  • Phase 3 Construction Schedule (Spring 2016 through Fall 2016*):
    • W. Upas Street Front Street to Hawk Street
    • W. Walnut Avenue Albatross Street to Front Street
    • Albatross Street W. Upas Street to W. Walnut Street
    • Front Street W. Upas Street to W. Walnut Street
    • Upas Street Fifth Ave to Ray Street Parallel (Parallel distribution mains)
  • Phase 4 Construction Schedule (Fall 2016 through Spring 2017*):
    • W. Upas Street Hawk Street to northbound Pacific Coast Highway
    • W. Upas Street Louisiana Street to Herbert Street
    • Upas Street Installation of Pressure Reducing Station at 7th Avenue
    • Upas Street Installation of Pressure Reducing Station at Park Blvd.
  • Phase 5 Construction Schedule (Spring 2017 through Fall 2017*):
    • Upas Street Ray Street to Louisiana Street
    • Upas Street Vermont Street Ray Street (Completion of surface improvements.)

*Dates are approximate and subject to change; please visit the Project website regularly for the latest!

Project Budget

The project's planning, design and construction budget is $32.2 million.

Contact Us

For questions or concerns about the project, call the Public Works Department construction project information line at (619) 533-4207, or email Please reference the Upas Street Pipeline Replacement Project in your inquiry.