One Dalton Street
One Dalton Street


Boston skyline is about to add a new major feature. A 65-story tower that soars 760 ft (230 m) into the Boston Sky. TREVIICOS succeeded in securing the full foundations and site work package for the new tower. TREVIICOS will be working as the main contractor for the package under the Construction Manager, Suffolk Construction. The new tower will consist of ultra-high-end hotel and condominiums managed by Four Seasons Hotel. The tower is located in the heart of the famous Back Bay area a few steps away from the Charles River, Symphony Hall and the finish line of the legendary Boston Marathon

The project by developer Carpenter & Co. will make Boston one of only a handful of cities in the world with two Four Seasons hotels. The others include London, Shanghai, Instanbul, Los Angeles, and Chicago.

The architects shaped the building in an equilateral triangle with rounded corners, a form that is designed to mirror the geometry of the neighboring Christian Science Mother Church. Its hotel rooms and condos will feature sweeping views of the Back Bay skyline, the Fenway, and the Charles River.

The $700 million tower is founded on a series of very deep rectangular load bearing elements. The load bearing elements will be excavated using a hydromill to a depth of approximately 190 ft (58 m) including approximately 16 ft (5 m) into hard rock. The building will also include three below grade level supported by a combination of diaphragm wall and a secant pile wall. With construction that is starting imminently, the hotel and residences are expected to be completed in 2017.
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