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Unionport Bridge Replacement

The Unionport Bridge, a double-leaf bascule drawbridge crossing Westchester Creek, is a vital piece of South Bronx infrastructure that supports 60,000 vehicles daily. Built in the 1950s, the bridge was in poor condition due to age and heavy traffic, leading the New York City Department of Transportation (NYCDOT) to undertake its full replacement, including new mechanical, electrical, and fender systems. The new bridge comprises two side-by-side, single-leaf bascules, each carrying three lanes, a bikeway, and sidewalk.

EnTech has provided extensive REI services, including monitoring contractor work on- and off-site for quality, safety, and conformance to contract documents and specifications. This includes managing off-site fabrication inspections, as well as overseeing assembly and installation on-site. The REI team is also overseeing continual vibration monitoring of highway structures, the implementation of the WZTC plans, and is providing community liaison services.

Additionally, EnTech has provided engineering design services as a subconsultant on the design team. Civil services included preparing complex staging plans, work zone traffic control (WZTC) plans, and design of traffic signals and pavement markings, as well as CAD and BIM support. The firm’s environmental division performed hazardous materials investigations across the 30-acre project area.

Project Owner

NYCDOT

EnTech Role

Subconsultant

Location

Bronx, NY

Project Status

10/2012 – Present

Construction Cost

$232 million

East Side Coastal Resiliency CM, Project Area 1

Henry Hudson Bridge Toll Plazas and Southbound Approach Reconstruction CA/CI

Verrazzano-Narrows Bridge Painting and Lighting Improvements Design-Build PMC

Pierce Reynoldson, AIA
Vice President, Technology & Education
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