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145 Broadway

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Excavation to B1 Level with Exposed LBE Columns
Excavation to B1 Level with Exposed LBE Columns

Location: Cambridge, MA
Owner: Boston Properties
Completion Date: November, 2017
General Contractor: Turner Construction Company

Vital Statistics:
Project Value: $10,360,000.00
Wall Type: 36” Reinforced Concrete Wall and 22 LBEs
Wall Area: 90,200 S.F.
Max. Excavated Depth: 120'

Project Description:
Located near Kendall Square in Cambridge, MA, 145 Broadway is the new headquarters for Akamai Technologies, a web services provider. The building is 19 stories and 250 feet tall, with a 5-story 374 space below grade parking garage. Construction subgrade was 55’ below street grade. The project was constructed using an “up-down” construction procedure. The building structural elements were supported on a combination of a reinforced concrete diaphragm (slurry) wall, and deep reinforced concrete Load Bearing Elements (LBEs) installed from current site grades through the overburden soils and into the underlying bedrock. After construction of the ground floor slab and B1 slab was complete, construction of the superstructure proceeded, supported on the completed LBE foundation elements. Construction of the remaining below-grade parking levels, B2 through B5, continued below.

Hydromill Sotress Plant
Slurry Wall Production
Hydromill Sotress Plant Slurry Wall Production

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145 Island Street, Stoughton, MA 02072, 781-344-5700

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