Local Information

Contractor selected for SR 520 Montlake Project

Wednesday, October 10, 2018 - 14:29

Steve Peer, communications, 425-301-2023

Graham Contracting awarded the apparent best value; construction begins in early 2019

SEATTLE – The Washington State Department of Transportation announced Wednesday, Oct. 10, that Graham Contracting LTD. submitted the apparent best value proposal for building the State Route 520 Montlake Project.

The best value is a combination of bid price and technical proposal points. The winning price proposal was $455,349,888. Although above WSDOT’s cost range of $375 million to $425 million, the proposal was the lowest of the three bids. The winning proposal commits to completing the project earlier than WSDOT’s projected schedule. Graham also commits to reducing the project’s environmental and community impacts.

WSDOT plans to award and execute this design-build contract in the coming weeks, subject to final review and acceptance of the proposal opened today. Design-build is a type of contract that combines project design and construction into a single contract.

Three contractor teams submitted bids in September:

  • Atkinson/Traylor JV
  • Graham Contracting LTD
  • Kiewit Manson

 “We want to thank all three teams that submitted innovative proposals," said SR 520 Program Deputy Administrator Omar Jepperson. "We know that costs have continued to escalate in this booming Puget Sound economy. Graham’s proposal combines a high technical score with the lowest cost, and we look forward to working with them. When complete, the new Montlake interchange and lid will be a community hub with multimodal transportation options for all. The new project will provide greater safety and reliability for drivers, transit riders, bicyclists and pedestrians." 

Construction is expected to begin in early 2019 and wrap up as early as 2023. The design-build contract includes:

  • A new Montlake interchange (pdf 687kb).
  • A landscaped lid over SR 520.
  • A bicycle/pedestrian "land bridge" east of the lid, connecting the Arboretum to East Montlake Park.
  • A West Approach Bridge South for eastbound traffic, similar to the recently opened West Approach Bridge North.  

Construction of the Montlake Project is the first of four SR 520 projects that make up the Rest of the West improvements. The projects were fully funded in 2015 in the Connecting Washington funding package.

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