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Project update - July 29, 2021

King County’s contractor continues to work inside both pump stations and outside on landscape restoration.

Making progress

This project newsletter has an overview of key milestones we have reached as we work to make sure that our sewer equipment can deliver reliable service to your community.

Road work information

road map displaying closures

Work hours

  • Weekdays 7 a.m. to 7 p.m.
  • The contractor may work on weekends as needed. We will keep you updated on weekend work through our email updates.

Timing

  • This work will continue through 2021.

Major work being performed

  • Restoration

Work hours

  • Weekdays 7 a.m. to 7 p.m.
  • The contractor may work on weekends as needed. We will keep you updated on weekend work through our email updates.

Timing

  • This work will continue through 2021.

Major work being performed

  • Restoration

Closure information

  • Intermittent single-lane closures during working hours

Work hours

  • Weekdays 7 a.m. to 7 p.m.
  • The contractor may work on weekends as needed. We will keep you updated on weekend work through our email updates.

Timing

  • Intermittent through the end of construction in 2021.

Major work being performed

  • Transport of large equipment.

Closure information

  • Intermittent single-lane closures during working hours, as needed.
  • To be notified in advance of a planned full closure for deliveries, please sign up for email updates on this page.

Work hours

  • Weekdays 8 a.m. to 4 p.m.

Timing

  • This work will continue through the end of construction in 2021.

Major work being performed

  • Transport of large equipment.

phases_graphic_construction

Contact us

Contact Caryn Sengupta, community services lead at:
 caryn.sengupta
@kingcounty.gov

206-296-7800 Project Hotline: please leave a message and we will return your call on the next business day.
 Feedback form

If you’d like to receive email or text updates on the Sunset and Heathfield pump stations and force main upgrade:

Project description

The Sunset and Heathfield Pump Stations and related sewer pipes send sewage from Sammamish, Issaquah, and Bellevue to be cleaned at King County’s treatment plant in Renton. This sewer system has provided reliable service for around 50 years and is reaching its limit.

This project will upgrade both pump stations and the connected force main pipe. The project will also upgrade the Eastgate Trunk structure near I-90. The Eastgate Trunk connects the force main pipe to a larger pipe, carrying flows to be treated at the South Treatment Plant in Renton. The improved system will help serve the growing population for many years.

Read our December 2016 newsletter for more information about how community feedback influenced final design and for details about upgrades to the pump stations.

Sunset Pump Station upgrades

Sunset Pump Station Final Design

  • Four new pumps to increase capacity
  • New electrical and controls systems
  • New standby generator allowing the station to continue operating during power outages
  • New heating and air conditioning systems (HVAC)
  • Addition of native plans and restoration of shoreline habitat
  • Roof replacement and added green roof to manage stormwater
  • New lighting and fencing
  • Permeable driveway

Heathfield Pump Station upgrades

Heathfield Pump Station Final Design

  • New lighting and fencing
  • Four new pumps to increase capacity
  • New electrical and controls systems
  • New standby generator
  • New heating and air conditioning systems (HVAC)
  • Rain garden
  • Landscaping
  • Roof replacement

Project area

Project schedule

Crews will work to restore SE 35th Pl and 164th Pl SE in early 2020.

Pump Station work will continue into 2021.

Project location

Project locator map for Sunset and Heathfield pump stations and force main upgrade

Back to the capital projects overview map .

Heathfield Pump Station,
3541 163rd Ave. S.E., Bellevue

Sunset Pump Station,
3730 W. Lake Sammamish Pkwy. S.E., Bellevue