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Road Services Division Capital Improvement Program (CIP)

February 1, 2021 - We are in the process of reworking this website. The project information contained here may not be comprehensive or up-to-date. Thank you for your patience, we should have a new site available soon. More project info.

Preston Maintenance Facility

Project No.:  1127271
Project limits:  29111 SE Preston Way
Project type:  Miscellaneous
Thomas Bros. Map No.:  628J3

Project description

Re-locate the Division 2 Maintenance Regional Shop from its current location in Fall City and move it to the Preston Maintenance Facility owned by the Washington State Department of Transportation.

Why is King County doing this project?

The Facilities Master Plan for the Road Services Division points out that the Fall City facility, that serves the Maintenance Division 2 service area, does not meet the Road Services Division’s location and functional standards. In order to bring the buildings and facilities up to standard, they would need to be reconstructed. However, the current location on Preston-Fall City Road is not appropriate as service from this location is impacted by flooding. Additionally, the site is undersized to place all the critical functional and operational facilities of a regional maintenance shop.

Project management phase:  Preliminary Design

Status as of July 6, 2020

The truck scale from the Issaquah Pit Site was relocated to the WSDOT Maintenance Facility and is awaiting permanent installation in 2018. 340 cubic yards of identified contaminated soil was removed in July, 2016. Determination of Non-Significance (SEPA) completed in November 2016. Conditional Use Permit application submitted (CDUP17-0001). Power supply connection scheduled for January, 2017. The office trailer was purchased and will be delivery to the site in the spring 2017. Office trailer delivered and temporarily stored onsite, awaiting building permit issuance and approval. Power and security system connected and functional. New gate installed onsite. New roll up, and entrance doors completed on existing garage.


Adopted Capital Improvement Program & program overview

The Road Services Division Capital Improvement Program (CIP) contains all design and construction and studies for improvements on roads, bridges or transportation facilities in the unincorporated areas of King County.

Vicinity map

Vacinity map