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 potentially interested parties.

Montlake Project contracting opportunities

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

Darling Nava, Diversity & Inclusion Resource Specialist

Tom McMillan, Procurement Manager, Graham

You can also visit Graham's website to learn more about their work on the SR 520 Montlake Project.

SR 520/I-5 Express Lanes Connection Project contracting opportunities

WSDOT selected Walsh Construction as the contractor for the design-bid-build SR 520/I-5 Express Lanes Connection Project, which began construction in summer 2021. Interested subcontractors should contact:

Ethan Kaufman, Project Manager, Walsh Construction
Work: 206-394-7300 / mobile: 206-579-3856

WSDOT contact for MSVWBE contracting opportunities

WSDOT voluntarily established goals for each project to promote contract opportunities and participation for small businesses owned by minorities, veterans or women (MSVWBEs). If you have questions, contact Regina Glenn, WSDOT Megaprograms Diversity and Inclusion Manager, at

Other ways to learn about contracting with WSDOT

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 West Approach bridge North 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 standard 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