Treviicos completes slurry wall of 3.5-acre, 1.3-million-square-foot Echelon Seaport

Treviicos has completed construction of the 104-panel slurry wall foundation of Echelon Seaport, a $950 million, 1.3-million-square-foot mixed-use development situated on 3.5 acres in the heart of the Seaport District. The slurry wall spans 2,172 linear feet, and has a total concrete surface area of 122,000 square feet. The first slurry wall panels along Seaport Boulevard are now being excavated, and concrete cap beams have been constructed at the top of the excavated panels. Echelon Seaport’s slurry wall has a maximum depth of 154 feet and an average depth of 65 feet; each panel is 30 feet thick.

Within the excavated section of the slurry wall, an internal horizontal bracing system has been installed to retain the slurry wall throughout excavation and foundation construction. Treviicos will use a combination of a one-to-two-level internal bracing system and a total of 349 tiebacks to support Echelon Seaport’s slurry wall. Tiebacks are now being installed along Seaport Boulevard within tieback sleeves injected into the slurry wall by Treviicos. Cement grouting is also underway along the excavated slurry wall in order to strengthen the wall’s concrete.

When complete, Echelon Seaport will feature 733 exclusive apartment and condominium residences and 125,000 square feet of premium retail and restaurant space, located steps from Boston Harbor. Construction of Echelon Seaport will span three years, with anticipated full completion by early 2020. The following are photographs of Treviicos at work at the 3.5-acre Echelon Seaport site:

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