Matthew Dapp, Project Manager



Construction to start on I-39/90/94 roadway improvements, Columbia County


A 10-mile roadway improvement project will begin Monday (April 17) on I-39/90/94 between Highway 33 and County CS in Columbia County. Work includes repairs to the existing driving surface and shoulders, installation of new guard rails, and new permanent signing and markings. Structure work is planned on the Highway 33 bridge, Cascade Mountain Road bridge, County U bridge, County V bridge, and Kent Road bridge.


Interstate 39/90/94 will be open to traffic during construction with off-peak lane and shoulder closures. Posted detours will be used for ramp closures. Motorists are encouraged to use caution in the area.


The $9.6 million project is scheduled for completion by early November.


Motorists are encouraged to call 511 or log onto for the latest traffic updates locally and statewide.

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