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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

June 2026

Portion of sidewalk closed at Lowman Beach Park until August

Crews continue to repair the pipe at the northeast corner of Lowman Beach Park and along Beach Drive SW. Construction activities will temporarily affect access to a portion of the sidewalk and street parking until August.

Valve replacement work outside the Murray Pump Station in the park is finished.

Most of the park will remain open during construction. The road and park will be restored this fall and early winter after the pipe work is complete. We will keep sharing project updates with the community.

Road work on Beach Drive SW near Lowman Cove begins on Wednesday, June 10. This work was originally scheduled to begin on June 15, but we now need to move the start date earlier than what was previously communicated to the affected residents. Thank you for your patience and understanding.

For more information, check out our latest email update: Portion of sidewalk to close at Lowman Beach Park until August

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