KingCounty.gov is an official government website. Here's how you knowexpand_moreexpand_less
Website addresses ending in .gov belong to official government organizations in the United States.
A lock lock or https:// means you've safely connected to the .gov website. Only share sensitive information on official, secure websites.
We currently offer language translations on our site primarily through Google Translate. This helps visitors find and use information in the languages they speak, but the tool is not perfect. Automated translation may be inaccurate or errors may display on translated pages.
Google Translate is an external website. King County does not control the quality or accuracy of translated content.
Please choose a language
Find a variety of project documents such as environmental checklists and translated materials.
Please also visit the Public engagement page to view materials and information shared at meetings; project updates are posted on the home page.
Coal Creek Trunk Upgrade Project
Coal Creek Trunk Maintenance Hole 25B Protection Project
Translate