Shaw Brothers Construction was tasked with the removal of a 43 year old hydro dam in Wiscasset that was no longer being used to generate power. The removal of the dam would allow fish to migrate further up stream into their original habitat. Rather than using explosives to remove the 3,800 cubic yards of concrete, Shaw Brothers utilized their large 12,000 lb hydraulic hammer mounted on a Cat 345 excavator to systematically demolish the structure all while keeping water flowing downstream. The concrete rubble and steel were removed from the site, and recycled. The dam was removed completely down to existing ledge; the stream bed was then shaped and blended into the existing slopes and all disturbed areas were loamed and seeded. To further restore the area, seedling trees were planted within the previous pond and dam structure foot print.
At a Glance
Owner: The Chewonki Foundation
Location: Wiscasset & Woolwich, Maine
Project Value: $264,600.00
Engineer: Stantec Consulting Services, Inc.
Start Date: October 8, 2010
Completion Date: November 3, 2010
Concrete Removal: 3,800 CY
Recycled Concrete: 3,800 CY
Trees Planted: 285 EA