Connecting 28th/24th Ave S

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Connecting 28th/24th Ave, S 200th St to S 208th St

This project will construct a new principal arterial road between South 200th and South 208th Streets and connect 28th Avenue South to 24th Avenue South.  This project completes a vital north/south corridor that provides a direct connection with the SeaTac Regional Growth Center, Des Moines Creek Business Park, Seattle-Tacoma International Airport,  Angle Lake Light Rail Station at South 200th Street, and multiple adjacent developable properties.  

The new road will include four general purpose lanes, turn pockets, and a shared use path along both sides.  The project also builds a new bridge and tunnel structure that is forward compatible with and accommodates the future State Route 509 highway extension.  General Contractor Ceccanti, Inc. is building the roadway at an estimated cost of $14 Million.

Current Construction Update:

Although there were challenges, including experiencing one of the wettest winters ever, Ceccanti was able to keep the project moving forward and on schedule to open the road by the end of August, 2017.

The current stretch of sunny and dry weather has helped to complete the work over the tunnel and place the first layer of asphalt on both  24th Avenue South from South 208th Street to the tunnel as well as the  shared use path.  Street lights and pedestrian lights were energized, driveway approaches constructed, fences installed and walls painted. 

Upcoming Work:

Complete the joint utility trench
Complete sidewalk and pedestrian path
Paving and striping
Complete drainage
Restoration/Punchlist Items


 Construction Dates: Spring, 2016 through Summer, 2017 

View Photo Album

 Project Vicinity Map 


City Contact:  Florendo Cabudol, City Engineer, 206.973.4740,