100690 - SW 205th Avenue - Baseline to Quatama Improvements

The project involves improvements to SW 205th Avenue from Baseline to Quatama in Washington County, Oregon. The work includes temporary traffic control, earthwork, watermain, sanitary, and storm sewer work, retaining walls, bridge removal and installation, pavement removal, traffic signal installation, and landscaping. The project cost range is estimated to be between $15,000,000 and $30,000,000. Some key features of the project include: • Implementing temporary traffic control and erosion control measures • Performing earthwork and watermain, sanitary, and storm sewer work • Installing retaining walls and a new multispan bridge • Removing bridge #671327 and performing cold plane pavement removal • Installing traffic signals, illumination, and interconnect systems • Constructing aggregate base and asphalt concrete pavement, concrete curbs, gutters, sidewalks, and ramps • Installing permanent signing and striping, and seeding and landscaping • Constructing water quality facilities and performing additional and incidental work as called for by the specifications and plans.