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I-5, Mellen Street to Grand Mound - Project Area Map

Project Area Map


Two projects will improve I-5 between Mellen Street and Grand Mound. They include: 

I-5, Blakeslee Junction to Grand Mound

This project will widen 4 miles of I-5 from two lanes to three lanes in each direction between the Blakeslee railroad junction in Lewis County (milepost 83.5) and just south of the Grand Mound interchange (Exit 88) in Thurston County. Construction of Phase 1 will begin in 2010.

I-5, Mellen Street to Blakeslee Junction
This project will improve safety and mobility for all vehicles traveling on this section of I-5 by constructing Collector-Distributor lanes from Mellen Street to Harrison Avenue, improving the Mellen Street interchange, and re-aligning I-5 at the Blakeslee curve.