Callahan Tunnel Hydrodemolition

Callahan Tunnel Hydrodemolition

Callahan Tunnel Hydrodemolition

  • Rampart removed approximately 321 CY of concrete on the deck surfaces and 10,000 LF of concrete on the curb surfaces
  • On time and under budget completion
  • OSHA-recordable injuries or any safety incidents
Location
Boston Massachusets
Project Team
  • Owner:
    Massachusetts Department of Transportation
  • General Contractor:

    McCourt Constructions Co., Inc.

  • Engineer of Record:
    Dewberry
  • Demolition:
    Rampart Hydro

The Callahan Tunnel, which opened in 1961, is a one mile long tunnel beneath the Boston Harbor. This rehabilitation project of the Callahan Tunnel was major overhaul that required the tunnel to be completed closed from December 2013 to March 2014. MassDOT utilized accelerated construction techniques, with incentives/penalites, to shorten the overall project duration and reduce costs.

Rampart Hydro Services was selected for this project because of our large equipment fleet and experienced hydrodemolition technicians. Due to the potential penalties that MassDOT could impose for late completion, the General Contractor chose to hire an experienced hydrodemolition company with the equipment and personnel capacity to ensure that the project would be completed on time. Rampart was able to provide five hydrodemolition units for this project. Four units were utilized to complete the work and one extra unit was kept on site at all times, in case of an equipment breakdown.

Rampart removed approximately 321 CY of concrete on the deck surfaces and 10,000 LF of concrete on the curb surfaces. In addition, Rampart provided and installed fresh water piping to supply the hydrodemolition units and performed wastewater collection.

This project was completed on time and under budget, with no OSHA-recordable injuries or any safety incidents. Rampart was rated as “Very Good” by the Massachusetts Department of Transportation’s Resident Engineer on the Callahan Tunnel Rehabilitation project. To receive this rating, we were graded on Workmanship, Safety, Equipment, Schedule, Field Supervision, Home Office Support, Contract Compliance, and Payment of Accounts receiving an overall rating of 90.