Valhalla Utility Improvement and Waynita Tightline Projects

About the Project

The Valhalla Utility Improvement Project will upgrade failing utility infrastructure within the Valhalla neighborhood and the Waynita Tightline Project will construct a new sewer bypass line to reduce sewage flows to Lift Station #1. 

This work was originally conceived as a single project and was later broken out into two separate projects to allow construction to begin sooner than would have been possible as a single project. Sewage flows that bypass Lift Station #1 will be conveyed directly to a King County Metro Sewer main. Associated pavement repair and curb ramp upgrades to meet Americans with Disabilities Act (ADA) requirements are also included in the project. 

  1. Map
  2. Schedule

Valhalla Utility Improvement Project Vicinity Map

Click map to enlarge.

For accommodations, such as alternate formats or language assistance, please contact Erin Leonhart at 

Para adaptaciones, como formatos alternativos y asistencia con el idioma, comuníquese con Erin Leonhart en 

Learn more about Title VI.

  1. Robert McCadden

    Capital Project Engineer
    Phone: 425-471-9300