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SR 518, Tukwila International Boulevard Station (TIBS) Bus Rapid Transit Project

Contract summary

The SR 518, Tukwila International Boulevard Station (TIBS) Bus Rapid Transit (Project) will create a new Bus Rapid Transit (BRT) station on SR 518 between mileposts 2.49 and 2.91, to connect the existing Tukwila International Boulevard Link light rail station and communities to the south of SR 518. This project includes roadway modifications, new bus only lanes, and pedestrian bridges to access the new Stride bus rapid transit stations and related facilities.

Public Works
Publication Date
Contract status
Planned
Contract ID
XE3492
County
King County
Submittal due date and time
Estimated value
$100,000,000.00 - $150,000,000.00
Funding source
Sound Transit and FTA funded contract with disadvantaged business enterprise goals to be determined.
Contact
Andrew Ziegler
Design Manager
SR518_TIBS@wsdot.wa.gov
425-450-2570
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Project information available 

Fact sheet (PDF 2.92MB) - posted 2/27/2025

Project visualizations

Image
Aerial view of the existing Sound Transit Tukwila International Blvd Link Rail Station, a new pedestrian bridge over SR 518, and a new Stride Bus Rapid Transit Station in the median of SR 518 near SR 99.
Aerial view of the existing Sound Transit Tukwila International Blvd Link Rail Station, a new pedestrian bridge over SR 518, and a new Stride Bus Rapid Transit Station in the median of SR 518 near SR 99.

 

Image
Aerial view of SR 518 from 24th Ave S to 42nd Ave S with multiple connecting ramps, surrounded by buildings, parking lots, and green spaces.
Aerial view of SR 518 from 24th Ave S to 42nd Ave S with multiple connecting ramps, surrounded by buildings, parking lots, and green spaces.

 

Image
Aerial view of the existing Sound Transit Tukwila International Blvd Link Rail Station, a new pedestrian bridge over 518, a new Stride BRT Station in the median of SR 518.
Aerial view of the existing Sound Transit Tukwila International Blvd Link Rail Station, a new pedestrian bridge over 518, a new Stride Bus Rapid Transit Station in the median of SR 518.