Clure Public Marine Terminal Expansion

Location: 1310 Port Terminal Drive, Duluth, MN 55802
Nominated by: Barr Engineering Co.

The Clure Public Marine Terminal redevelopment project is the result of nearly three decades of planning to transform a blighted slip into a fully functioning multi-modal transportation terminal. As the only general cargo terminal in the Duluth-Superior Harbor, the Clure Expansion fills a large role for the shipping industry and it serves as a logistics hub that has 400,000 square feet of warehouse space as well as outdoor storage. This property historically operated as a grain elevator and slip for over a century. The elevators and dock became obsolete in the 1970s. The dock and surrounding buildings fell into disrepair over the years, but since 1997 remediation efforts have been underway in order to repair, expand, and reconnect the terminal to existing infrastructure.

After many years of abandonment, erosion had contaminated much of the surrounding sediment and dock surface of both the terminal and the adjoining boat slip. Remediation began with the cleanup of soil and sediment, repair of the dock walls, and rebuilding and capping contaminated surfaces. Soil remediation of the adjoining slip was also necessary, which involved removing sediment that had washed out of the failing pier dock walls, partially filling the slip which was eventually dredged. Impacted fill soil within in the dock structure was also stabilized to prevent future contamination of the slip. A soil remedial cap was placed across the site to provide separation from residual soil impacts that remained after several hot spot removals. A vegetated stormwater management area was also established to help manage stormwater runoff.

After a lengthy period of repair and remediation the expansion of the terminal has resulted in improved sediment quality and a reduction in waterway contamination. The improvement in sediment also translates to an increase in the health of local aquatic ecosystems. The clean sediment dredged from the slip was used in two other local redevelopment projects, reducing the environmental cost associated with transport and disposal of soils. The establishment of a deep-draft dock also has far reaching consequences on the environment by opening the region to a more efficient method of cargo transportation. The overall remediation of the site solved current contamination issues while also ensuring that the risk of future contamination has been greatly reduced.

The expansion is also significant to the regional economy, it serves several industries crucial to the Midwest economy such as mining, manufacturing and steel production, wood products, and wind turbine components. The remediation of this project has resulted in a cleaner environment locally and has increased the economic potential for both for the state and the region.

Project Financing:

  • $10,000,000 – United States Department of Transportation TIGER Grant
  • $2,750,000 – Minnesota Department of Transportation Port Assistance Program Fund
  • $990,000 – Minnesota Department of Employment and Economic Development Contamination Cleanup and Investigation Grant Program
  • $4,001,000 – Duluth Seaway Port Authority

Project Partners:

  • Duluth Seaway Port Authority
  • Minnesota Department of Transportation Port Development Assistance Program
  • United States Department of Transportation TIGER Program
  • Minnesota Pollution Control Agency
  • Minnesota Department of Health
  • Minnesota Department of Natural Resources
  • Minnesota Department of Employment and Economic Development
  • City of Duluth
  • LHB, Inc.
  • AMI Consulting Engineers
  • Barr Engineering Co.
  • EPC Engineering and Testing
  • Marine Tech
  • Twin Ports Environmental Construction
  • Graves Drilling
  • Pace Analytical
  • Legend Technical Service
  • Lunda Construction
  • Krech and Ojard
  • Braun Intertec
  • Lake Superior Warehouse
  • CN Rail