CALL FOR BIDS: SOUTH COLVERDALE ROAD AND MARTINS BLUFF ROAD INTERSECTION IMPROVEMENT PROJECT COWLITZ COUNTY, WA Bids due: September 6, 2016 @ 11:00 am The Board of County Commissioners of Cowlitz County, Washington will receive sealed bids until September 6, 2016, prior to 11:00 a.m., for the following work: SOUTH CLOVERDALE ROAD AND MARTINS BLUFF …