550 Washington Street (St. John’s Terminal Redevelopment)

New York, NY | 2017–2024

SCOPE:

Structural design and construction engineering for the 1.1M SF redevelopment of St. John’s Terminal into Google’s NYC headquarters. Scope included a 9-story overbuild above an existing structure and retrofit of four podium levels.

The project introduced bridge design principles into building design through a post-tensioned core and required complex coordination between new construction and active restoration. We led construction engineering and temporary works review, supporting an expedited construction schedule while maintaining structural integrity throughout.

OUR ROLES:

As construction engineering lead, Dave Douglas:

  • conducted preliminary investigative condition assessments,

  • reviewed temporary structures, both design and field erection,

  • provided QC site presence,

  • reviewed of shop drawings, and

  • provided QC of precast fabrication plant processes.

As project engineer, Stephanie Berrios:

  • worked on structural design of steel overbuild and transfer structure,

  • developed restoration details for the existing podium,

  • provided site presence both for fielding questions to engineer of record and concrete special inspections, and

  • participated in ongoing condition assessments to adapt original design details to field conditions.

NOTE: Project completed at a previous firm

Exterior of a modern multi-story building with glass windows, a concrete staircase, and surrounding landscaping featuring rocks, small trees, and snow.
Construction workers and equipment inside a large building under construction, with a large concrete structure being lowered by a crane.
Construction workers at a building site using a blue boom lift to work on a concrete wall. Two workers stand on the ground wearing safety gear, while one worker is on the lift, working on the wall. Safety barriers and ladders are visible.
Construction workers on site installing a large concrete wall, with heavy machinery and scaffolding present.
Construction site with a tower crane lifting a large concrete slab, surrounded by orange safety fencing, with city buildings and cloudy sky in the background.
Construction site with excavation pits, steel beams, scaffolding, and workers installing concrete structures.

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