SR 520 Bridge Replacement and HOV Program - Contractor information

What is WSDOT's contracting process?

WSDOT hires contractors to complete construction projects. The contractor is responsible for hiring administrative and field staff to work on those projects. The contractors also are responsible for securing vendors and subcontractors for the projects, and assembling their workforce. WSDOT works with the contractors to ensure that notification is provided to all potential parties.

Montlake Project contracting opportunities

WSDOT selected Graham Contracting Ltd. as the contractor for the SR 520 Montlake Project, which began construction in summer 2019. Interested subcontractors should contact:

Darling Nava, Diversity & Inclusion Resource Specialist

Learn more about Graham and its work on the Montlake Project on Graham's website.

Other ways to learn about contracting with WSDOT:

  • To learn more about Disadvantaged Business Enterprise contracting opportunities, visit our Diversity Program page.
  • Contact the SR 520 contractors using the contact information below.

WSDOT advertises projects on the Contract Ad and Award website. At this website, contractors can view projects that are available for bid, learn about prequalifications, and stay up to date with contractor bulletins.

Previous SR 520 construction contracts


Contract amount as awarded

Apprenticeship requirement

DBE goal


SR 520 Pontoon Construction Design-Build Project*

$367 million (awarded to Kiewit-General Joint Venture Feb. 2010)

15 percent

6 percent


Eastside Transit and HOV Design-Build Project

$306 million (awarded to Eastside Corridor Constructors Nov. 2010)

15 percent

11 percent


SR 520 Floating Bridge and Landings Design-Build Project

$586.6 million (awarded to Kiewit/General/Manson, A Joint Venture August 2011)

15 percent

7 percent


Montlake to Evergreen Pt. Bridge West Approach Bridge North Design-Bid-Build Project*

$199.5 million (awarded to Flatiron West Inc. July 2014)

15 percent

10 percent


*Pontoon Construction Project and design-bid-build project contract documents are available only through public disclosure request process.

Apprenticeship requirements

Design-build and design-bid-build teams will comply with an apprentice utilization requirement. The goal is that 15 percent of project labor hours will be performed by apprentices. The apprenticeship program provides on-the-job training and supportive services to assist contractors with recruitment and placement of minorities and women, as well as to provide advocacy and support for individual apprentices/trainees participating in the program.

Additional resources