NASDI Projects - Heavy Civil

NASDI was contracted to perform the 30,000 square foot bridge deck, sidewalk, and parapet demolition of the historic Boston University Bridge to facilitate its rehabilitation. The bridge traverses the Charles River; the body of water separating Boston and Cambridge, Massachusetts.   In order to maintain traffic on this major transportation corridor, work was scheduled to be performed at night, and in multiple stages. The overall project duration is approximately two years.

NASDI performed the demolition of this 8,000 square foot bridge over State Route 24 in Randolph, Massachusetts.  Due to the heavy vehicular traffic on Route 24, all demolition activities were performed at night.  The scope of work included the complete removal of the bridge decking, supporting beams, piers, and abutments.  On this project, NASDI coordinated with both the general contractor and the Massachusetts Highway Department to plan and to execute a safe, effective bridge removal.

The Bronx–Whitestone Bridge (referred to as the Whitestone Bridge) is a suspension bridge located in New York City that spans the East River, connecting the boroughs of Queens on Long Island and The Bronx via Interstate 678. The bridge is operated by the New York City Metropolitan Transit Authority, Division of Bridges & Tunnels. NASDI is performing the staged demolition of the structure at the Bronx and Queens approach and the superstructure and substructure removal of the concrete deck, beams, and piers.  All hazardous material remediation will be performed by NASDI.

NASDI recently completed the demolition of the Harvard Street bridge deck over the Massachusetts Turnpike in Newton, MA.  The scope-of-work on this project involved the removal of the reinforced concrete bridge deck while salvaging the existing steel beams and shear connectors.  Under the contract parameters of the MTA and MASSDOT, all demolition work was completed at night.

NASDI, LLC performed the selective demolition of this 600’ wooden bridge, that spanned the Warren River in Barrington, Rhode Island.  The wooden bridge was a temporary structure employed for two years during construction of the permanent bridge. NASDI removed and saved the entire wood and steel frame super structure, intact. All materials were shipped back to the Rhode Island Department of Transportation storage facility for future use. The concrete pile caps and the steel piles were removed in their entirety as well. This project was completed on schedule and within budget. All work was performed within the Rhode Island Department of Transportation parameters.