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King County Washington home

Murray Force Main Rehabilitation

The Murray Force Main Rehabilitation project will rebuild a section of a pressurized sewer pipe called a force main to maintain reliable service to West Seattle residents living near Lowman Beach Park.

Project description

King County is rebuilding a damaged sewer pipe to maintain reliable sewer service for West Seattle residents near Lowman Beach Park and protect public health and Puget Sound.

The Murray Pump Station has two pressurized sewer pipes, also known as force mains. These pipes run parallel under Beach Drive Southwest and help move sewage to West Point Treatment Plant, where it is cleaned and safely discharged into Puget Sound. In March 2022, one of the pressurized pipes broke due to severe corrosion. King County repaired about 800 feet of the damaged pipe at that time. This project will repair the remaining 350 feet of damaged pipe and install two air valves to help reduce pipe corrosion in the repaired pipe.

This work needs to occur during the dry season when wastewater flows are lower. Road and park restoration will occur in fall 2026 after the pipe is rebuilt.

What to expect during construction:

  • No interruption to wastewater service.
  • One-lane alternating traffic on Beach Drive SW, with steel plates in the road. Bicyclists should use extreme caution passing through the work area.
  • Lowman Beach Park playground, beach and sidewalks will remain open during construction.
  • Typical construction noise near work areas.
  • Street parking is restricted to construction during the posted hours. Please follow the parking sign instructions.

Project update

July 2026

Sewer work continues near Lowman Beach Park

Crews are repairing sewer pipes near the northeast corner of Lowman Beach Park and along Beach Drive SW.  

As early as Monday, August 3, crews will place a temporary pipe ramp across Beach Drive SW near the intersection with 48th Avenue SW. The ramp lets crews repair the sewer pipe without digging up the road. It will be in place for up to two days while the new underground pipe lining hardens. Crews will also stage trucks and equipment on Beach Drive SW for the pipe repair. Flaggers will direct traffic while this work takes place.

Come chat with us!

Join us at Lowman Beach Park to learn about remaining construction at the park and along Beach Drive SW. We’ll be able to chat near the playground during the following times:

  • Monday, August 3, 10:30 am to 1 pm
  • Tuesday, August 4, 10:30 am to 1 pm

For more information, check out our latest email update: Sewer work continues near Lowman Beach Park.

Stay informed

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Project location

Translations

Español (Spanish)

Public Engagement

Public meetings

July 15, 2026 - Morgan Community Association briefing

Date: Wednesday, July 15, 2026

Time: 7 pm to 8 pm

Location: Zoom virtual meeting

Event Summary

The Murray Force Main Rehabilitation Project team attended the Morgan Community Association’s (MoCA) July 15 meeting via Zoom to provide a briefing on the project and respond to questions about restoration plans at Lowman Beach Park.