SE 172nd Avenue Improvements

Clackamas County, Oregon

The SE 172nd Avenue Project, which runs from Highway 212 north to Sunnyside Road, transformed a two-lane rural arterial into a five-lane urban arterial roadway. The project included construction of a two-lane roundabout, creek and habitat restoration, and the County’s first “green street” stormwater facilities. Over 80 parcels of land acquisition, and extensive coordination with DEQ and NMFS on the approval of the stormwater design, were required. Extensive horizontal and vertical roadway improvements were made to improve safety along the corridor. The project was a major success, coming in on time and within the overall $25 million budget. HHPR worked closely with the City of Happy Valley throughout the process.