Harmon Shop PH V Gas Main Installation
Croton-on-Hudson, New York
Skanska-ECCO III JV
January 2017 – December 2017
- 1,000’ of 8″ steel gas main
- Gas main installed under the bridge in a 12″ steel casing
- Temporary platform to work over operational tracks
- Station remained in operation
As part of the $300M Harmon Shop Replacement Phase V – Stage I design-build project awarded to Skanska-ECCO III JV, Posillico was subcontracted to install approximately 1,000 feet of 8″ steel gas main encased in a 12″ steel casing below the existing Croton Point Avenue bridge located above the MTA – Metro North Croton Harmon train station.
WHAT MADE THIS JOB COMPLEX
The gas main was required to be installed over an active rail yard, which required crossing multiple tracks without disruption to the existing station. The station serves thousands of commuters daily on Metro-North Railroad’s Hudson Line and Amtrak lines running along the Empire Corridor. In addition, the work required coordination efforts with the ongoing station work being performed by Skanska-ECCO III, JV and its multiple other subcontractors onsite.
HOW POSILLICO SOLVED IT
A temporary work platform was installed over the tracks in order to install the gas main under the bridge, with minimal disruption to the existing station. To install and remove the temporary work platform, Posillico worked closely with Metro North personnel to coordinate the installation during localized track outages. Posillico also coordinated efforts with the design-build team to temporarily modify the existing bridge’s superstructure to accommodate a quicker and more efficient gas main installation method.