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Construction

Working in your neighborhood

We recognize that neighbors along the SR 520 corridor have been experiencing heavy construction for many years. Skanska is committed to working with local communities to address their specific concerns, including those of residents, businesses, boaters, commuters, pedestrians and cyclists.

Reducing impacts to neighbors

To reduce community impacts, Skanska will:

  • By primarily using barges to transport materials and equipment to Portage Bay, we expect to reduce truck traffic on local streets by 6,200 truckloads.
  • Equipment will be stored at the Lakepointe Industrial Park in Kenmore and transported by barge to the project area. Check out the Kenmore Staging Site FAQ on the Construction Corner to learn more.
  • One barge will make two trips per day to and from the Lakepointe site.
Cranes on barges are staged near the SR 520 floating bridge during construction.
Crews use cranes, barges and work trestle during work on the SR 520 floating bridge.

The project obtained a Major Public Project Construction Noise Variance (MPPCNV) from the city of Seattle. The MPPCNV sets limits for nighttime construction noise. Read the MPPCNV on our Construction Corner. Skanska will obtain Temporary Noise Variances (TNVs) when noisy work is required at night. Neighbors will be notified in advance of TNV work.

Skanska will install noise monitors throughout the project area to make sure noise levels don’t exceed the permit limits. Have questions or concerns about noise during construction? Our outreach team is available 24/7 through the construction hotline at 206-319-4520. Continue to our Mitigating construction noise section to learn more.

We will install vibration monitors throughout the neighborhood. The vibration monitors will provide real-time data to Skanska and WSDOT to track and monitor vibration levels to ensure vibration limits are not exceeded.

Neighbors in the Portage Bay and Roanoke Park neighborhoods may notice vibrations when crews are installing piles in and around Portage Bay, removing the existing bridges and building support structures for the Roanoke Lid.

A long, steel pile in Union Bay is vibrated into the lakebed during construction for the SR 520 bridge.
Crews use a vibratory hammer to install a pile for a work trestle for the 520 Bridge over Union Bay

When crews need to work at night under a Temporary Noise Variance, neighbors near the work zone will be notified in advance and may be offered hotel accommodation for the duration of the work. If you live near the project area, be on the lookout for construction notice letters that will have more information on construction, anticipated noise and hotel offers.

We strive to minimize disruption to neighbors as much as possible. We are committed to engaging the community and keeping you informed throughout the project.

Continue reading to learn more about what to expect and what we’re doing to minimize impacts.