New England was the first region to host the industrial revolution in the young republic using abundant and cheap water power. As a result the Northeast has an extensive legacy inventory of dams dating from the 18th and 19th centuries that are old and obsolete. Massachusetts alone hosts over 3000 degraded and obsolete dams. Removing or rebuilding these structures is a high priority on the state’s infrastructure punch list.
NSI has worked on a number of aging dams restoring structural integrity and improving the safety profile. Each of these projects involved cofferdams for subsurface construction and in one case the installation of over 600 feet of a sheet pile cut off wall to mitigate water infiltration. These efforts were both highly complicated and rigorous engineering efforts dealing with extremely unstable and potentially dangerous structures. In these situations successful completion necessitates experienced personnel and field insight to deal with unexpected site conditions to complete the effort.
View NSI’s Dam Rehabilitation Projects.