Deep Foundations

De Pere Dam Walkway Replacement

De Pere Dam Walkway Replacement

Scope

Michels, one of North America's largest Deep Foundations contractors, performed the removal and replacement of walkway and pier structures along the eastern extent of the De Pere Dam. The team first removed the six existing 50-foot-long metal walkways and demolished five existing concrete piers. The project also included the installation of a cofferdam, five new formed and poured concrete piers, measuring 8 feet x 3 feet x 6 feet tall, and furnished and installed six new 50-foot-long, fabricated steel walkway structures on the piers. Additionally, a the outdated 480V line and conduit that was not up to current code was replaced. 

The work was performed on the Fox River, requiring the use of sectional barges and tugboats, while simultaneously dealing with strong currents high water levels. During the construction of the new concrete piers and dam walkway, the customer still required 24/7 access and power to the  Dam. Michels repurposed the old walkways as temporary structures so that personnel could safety and efficiently access the gate house on the Dam structure.

The staging area for the project was along a nearby roadway and a pedestrian walking trail; which meant once the weather improved, those areas became very populated and busy. Anytime the onshore crane was used, flagging was required. With quality and safety in mind, temporary road closures were implemented, and the crew successfully completed the project a month and a half ahead of schedule. 

  • Michels performed the removal and replacement of walkway and pier structures along the eastern extent of the De Pere Dam.
  • With quality and safety in mind, temporary road closures were implemented, and the crew successfully completed the project a month and a half ahead of schedule.

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Michels scope of work is to install 242 drilled shafts to support the piers for anew bridge. The installation of the drilled shafts was completed with the simultaneous use of up to four drill rigs. Utilizing barges, 233 drilled shafts were installed in the river. Michels crews also installed 7-foot and 10-foot permanent steel casing into bedrock for each shaft.

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Michels, one of North America's largest deep foundations contractors, built a secant pile structure for an underground power substation at the base of a multi-use building in the city's historic Third Ward.

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Michels was contracted to design and install secant shafts as temporary earth retention to allow for the excavation of approximately 71 feet below grade to install a new pump station.

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