As a chief element of the MBTA’s Silver Line providing service between Boston’s Logan Airport and South Station, this project provided a new transit station and running tunnel segments. Station and tunnels were constructed using cut-and-cover construction techniques.
Construction Support Services:
Gall Zeidler Consultants provided the contractor with a leak detection and remediation grouting procedure for the waterproofing compartments at the station and east tunnels. The waterproofing system comprised two layers of geotextile with a PVC membrane in between, as well as a water-bar compartmentalization system.