State Route 520 logo

Portage Bay on-land drilling for soil sampling

Date: April 1, 2024 to Aug 31, 2024

Time: 7 a.m. to 5 p.m. weekdays, 9 a.m. to 5 p.m. weekends

Activity details:

  • check mark icon High-impact construction
  • check mark icon Daytime

Impact type:

  • check mark icon Dust
  • check mark icon Noise

Description: In preparation for the Portage Bay Bridge and Roanoke Lid Project, crews will drill approximately 22 on-land test holes (also referred to as "geotechnical test borings") to collect samples around the project area. Work began April 1 and will continue through the summer.

Traffic: There will be minimal traffic impacts related to this work.

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Contact Info

Email: sr520bridge@wsdot.wa.gov
24-hour construction hotline: 206-319-4520

Note: This tool is presented for planning purposes only. Construction is inherently dependent on weather and other factors, and activities are subject to change.