South Waterfront Greenway Park

Portland, Oregon

South Waterfront Greenway Park

The American Council of Engineering Companies of Oregon (ACEC) awarded Hart Crowser an Engineering Excellence honor award in the Special Projects category for this work.

The Greenway Park project represents a collaborative effort between the Portland Development Commission (PDC) and Portland Parks & Recreation (PPR) with Hart Crowser, Inc. leading the comprehensive remedial investigation, design, and construction, as well as the geotechnical design, to develop a quarter mile section of riverfront property into a greenway path that will eventually stretch from downtown Portland to the Sellwood Bridge over five miles away. From its past as an industrial and shipbuilding yard, the site required significant contaminant remediation as well as geotechnical design to prevent shoreline erosion and create critical habitat for endangered fish along the Willamette River.

Highlights include:

  • The riverbank was substantially reshaped to create a shallow water habitat for threatened salmon and steelhead trout, as well as migratory birds.
  • This habitat included the installation of the largest Reactive Core Mat® in the lower Willamette River to further protect aquatic wildlife.
  • A remedial Investigation/Focused Feasibility Study (RI/FFS) that recommended covers using and enhancing landscape design elements to prevent future contact and migration of contamination.
  • Prepared environmental specifications and drawings, a Remedial Action Plan (RAP), and Contaminated Media Management Plan (CMMP) to implement the selected remedy.
  • Geotechnical exploration, seismic analysis, and design, including fills, retaining walls, stormwater infiltration, and pathways.

Photo credit: Bruce Forster