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South Ferry Tunnel & Terminal

Designed in one of the most densely populated underground sites in half the time

  • 3

    Train Connections

  • 600

    Foot Long Platform

  • 10K

    Riders Daily

  • New York, New York

    New York, New York

Creative design solutions to improve overall transit capacity at South Ferry Tunnel

Dealing with this dense underground site required the team to come up with creative design solutions to not only fit the tunnel and station but also enhance operations to improve passenger transit capacity. We designed an underground, reinforced concrete structural box to house the new 900-foot approach tunnel and 600-foot long station with train platforms.

To limit the extensive excavation that was required, the new box was positioned beneath an existing subway tunnel so the floor could be integrated with the roof of the new structure. This saved crucial space and money for rock excavation and construction schedule duration

The new tunnel/station box also allowed the alignment of the track to be straightened, a significant improvement over the existing loop track with a curved movable platform in the old station. This allows for more space for trains and people, and the train speed to improve, all increasing capacity within the system. 

At a Glance

Best 09, New York Construction News
2010 American Council of Engineering Companies (ACEC)/New York
Meet Our Team

Stéphane Lefebvre, Principal

Our driving force is to create iconic buildings and infrastructure that exceed client goals, embolden cityscapes, and empower communities.

Stuart Lerner, Executive Vice President & Chief Operating Officer - North America

As a frequent user of all forms of transportation, I have a great appreciation for the evolution of transportation and how it will be sustainable for the next generation.
Stuart Lerner Executive Vice President & Chief Operating Officer - North America Read More

Susan Walter, Executive Vice President, Infrastructure - North America

My favorite part of working on complex engineering projects is collaborating with the entire team—engineers, contractors, owners, and clients.
Susan Walter Executive Vice President, Infrastructure - North America Read More

Christian Wiederholz, Associate

I want clients to see me as a practical engineer: finding pragmatic solutions to complex problems with the goal of getting things done.

Steven Yuen, Structural Engineer

The unknown is usually the most challenging and enjoyable, which is why I’m open to learning something new every day.

Stéphane Lefebvre


Stuart Lerner

Executive Vice President & Chief Operating Officer - North America

Susan Walter

Executive Vice President, Infrastructure - North America

Christian Wiederholz


Steven Yuen

Structural Engineer

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