Project delivery methods

Find more information about the various ways we deliver highway construction projects.

Learn more about A+B bidding, a method of bidding used on some projects that rewards a contractor for completing a project as quickly as possible.

Find information on the method in which one-entity - a design-build team, works under a single contract to provide both design and construction services of a project.

Learn more about how we use flexible start dates to allow the contractor some discretion in establishing when a project's working days will start. This provision is used in specific projects where it would yield favorable results, including lower cost and more efficient use of contract time.

Interim completion dates allow us to address concerns of local agencies, businesses, and the traveling public with regard to the duration of a portion of a contract.

Lane rental is used to minimize the impacts of a project on the traveling public, by requiring the contractor to rent a lane in order to close it. This creates a monetary incentive for the contractor to be innovative and minimize the duration of lane closures.

Lump Sum Traffic Control is a method to streamline all traffic control unit items into a single item. The contractor submits a single lump sum bid for developing, implementing and maintaining traffic control on a contract.

14 fish passage projects were completed in 2020

improving access to 54.2 miles of upstream habitat.

11,959 incidents responded to

by WSDOT’s incident Response teams during second quarter of 2021, 15% more than same quarter in 2020.

41 Pre-existing Funds Projects Advertised

during the eighth quarter of the 2019-2021 biennium.