US Army Corps of Engineers
Detroit District Website

Revised: Corps of Engineers begin 2021 Duluth-Superior Harbor maintenance dredging, Minnesota Point beach nourishment

U.S. Army Corps of Engineers, Detroit District
Published July 26, 2021
U.S Army Corps of Engineers, Duluth Area Office uses a mechanical beach rake from the Aerial Lift Bridge to 36th Street to clean debris placed during 2020 beach nourishment on Minnesota Point.

U.S Army Corps of Engineers, Duluth Area Office uses a mechanical beach rake from the Aerial Lift Bridge to 36th Street to clean debris placed during 2020 beach nourishment on Minnesota Point.

U.S Army Corps of Engineers, Duluth Area Office Floating Plant crew designed and fabricated a screening machine to filter the debris from the beach on Minnesota Point.  The crew placed a larger 1” Screen on top and the bottom screen contained ¼” openings.  The crew placed the dredged material on the screen and utilized a vibrating mechanism and water to sort the rocks, wood debris and human made debris from the beach.  The crew has completed all required cleanup areas on the beach from the FY20 Dredging contract

U.S Army Corps of Engineers, Duluth Area Office Floating Plant crew designed and fabricated a screening machine to filter the debris from the beach on Minnesota Point. The crew placed a larger 1” Screen on top and the bottom screen contained ¼” openings. The crew placed the dredged material on the screen and utilized a vibrating mechanism and water to sort the rocks, wood debris and human made debris from the beach. The crew has completed all required cleanup areas on the beach from the FY20 Dredging contract

DULUTH, Minn., – The U.S. Army Corps of Engineers is set to begin 2021 maintenance dredging and Minnesota Point beach nourishment the week of Aug. 1, 2021.

Cleanup of material placed during 2020 continues.

“The contractor may begin mobilizing their equipment as early as July 26 but are more likely to start the week of August 1,” said Duluth Area Office Construction and Survey Chief Corey Weston.

The Corps of Engineers awarded the 2021 maintenance dredging contract July 14, 2021 to Sturgeon Bay, Wisconsin, based Roen Salvage Company. The Sturgeon Bay company will dredge 40,000 cubic yards (cy) of material.

The Corps of Engineers originally planned to dredge and place nearly 100,000 cy. However, they are reducing the amount of material due to stringent protocols and significant safeguards put in place to ensure the material is free from man-made debris for beach nourishment. [(Revised) Due to the short timeframe allowed for placement operations (July 26-Sept. 30), the contractor will conduct placement operations 24 hours a day, same as during 2020 placement operations. (Revised)]

“Public safety is a top priority for the Corps of Engineers and new requirements will impact the amount of material the contractor can place,” said Project Manager Melissa Bosman. “Our federally-mandated mission is to maintain harbor navigation and we partnered with the City of Duluth to beneficially use the dredged material as beach nourishment along Minnesota Point again this year.” 

The 2021 project placement area begins at the pier and extends to the S-curve, just South of 12th Street but North of the parking lot. The contractor will install fencing for safety and the public will not be allowed in those areas. The 12th Street parking lot can still be used for beach access to the South, but not North into the project area.

The contractor will start placing material at ninth Street to the S-Curve. The 2021 beach nourishment project will be complete by Sept. 30 and the contractor will de-mobilize by early Oct.

The Corps of Engineers conducted a survey of material placed in 2020 during the Spring of 2021. The survey showed 23 areas with high-magnetic signatures, eight above the water surface and 15 below the water surface.

The Corps of Engineers Duluth Area Office already excavated, screened and documented debris found within the eight above-water areas. They found mostly rocks and taconite pellets. The 2021 dredging contract includes cleanup of the 15 below-water areas before placing any new material. [(Revised) All cleanup operations will take place during daylight hours. (Revised)]

“They should complete excavating, screening and documenting these areas by mid-August,” said Bosman.

In addition to cleaning the areas identified in the survey, the Minnesota Point cleanup plan announced in early June included beach raking. Raking between the pier and 36th Street began June 23 and finished June 29. This initial raking gathered about 17 cubic yards of debris, mostly consisting of small pieces of driftwood and trash litter. Only about 20 can fragments were found.

After a storm the Corps of Engineers raked the beach again July 15 from the pier to 12th Street. The Duluth Area Office is currently sifting through the debris to document what was collected.

“The City of Duluth would like to thank the U.S. Corps of Army Engineers for their continued due diligence to this project,” Director of Parks, Properties & Libraries Jim Filby-Williams said. “While the Corps continues to clean up the beach for material coming from the 2020 Beach Nourishment Project, they continue to also pick up trash left by beachgoers. The City would like to remind the public that trash and recycle bins are located at various access points along the beach. If you can’t find one, please pick up and pack out your own trash to not further litter the beach and Lake Superior.”

The Duluth Area Office continues physically walking the beach as it has since November 2020 to look for and document any debris from material placement. “We believe the cleanup plan is working. We’re finding less and less can fragments every time, but we remain committed,” said Weston.

For more information on Duluth area dredging and Minnesota Point beach nourishment and cleanup please see the following link:

https://celre-gis.maps.arcgis.com/apps/MapJournal/index.html?appid=294f4ba1dc854c6188a685bd9dac043b

For questions or concerns, please contact Carrie Fox at carrie.d.fox@usace.army.mil.

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Contact
Carrie Fox
carrie.d.fox@usace.army.mil

Release no. 21-019