Author: Sarah McLellan

SPS is milling and paving nightly with Brox Industries, Inc. in the central artery tunnel of Boston. The work window is typically 4 hours nightly and all of the milled Microsilica wearing surface is replaced with new pavement on a nightly basis. We’re expecting to have a few thousand tons of pavement installed by the end of this year.

Seabrook-Hampton, NH Bridge Replacement Update: In collaboration with our partners — NH Department of Transportation, HDR< HUB Foundation Co., Inc., Redimix Companies, and Independent Concrete Pumping Corp.,—we are nearing completion of the deep foundations for the future bridge structure. Construction crews have started work on the substructure concrete for the piers and last week, the first pier footing was successfully completed, with a total concrete volume of 700 cubic yards.

Coming back to where it all started, the Railroad-SPS JV recently completed a 9-day shutdown on the MBTA Green Line D-Branch in early September. Our crews worked day and night to finish full depth replacement of a #5 and a #6 crossover at Fenway Station, including an additional 200 feet of full depth track replacement outside the turnouts. During the surge, our team also installed 1,400 new timber ties, 2,600 feet of rail, shot 23 thermite welds, and tamped almost 10,000 feet of track structure.

In addition, this surge marked the beginning of our work with Fischbach & Moore Electrical Group to install the MBTA’s new GLTPS system across the Green Line. Their electricians installed 128 new anchor assemblies and around 22,000 ft of new power supply cable, all while working in coordination with the ongoing track repairs.

All work was completed thanks to continued support from the City of Boston, Town of Brookline, and various MBTA Departments.

The Seabrook-Hampton project team has continued substructure construction through the winter, with work focused on the precast pier footing elements. All precast pier footings have been lowered into position and are currently in a dewatered condition. Crews will begin installing the permanent reinforcing steel and concrete for each pier footing, followed by construction of the column and the pier cap. Structural bridge steel erection is planned to begin for late winter/ early spring, followed by the concrete bridge deck construction.

Crews have also began constructing a temporary access trestle on the eastern side of the existing bridge. This temporary trestle will be utilized for the future demolition of the existing bridge.