T.Y. Lin International (TYLI), a globally recognized full-service infrastructure consulting firm, announces the completion of the 14th Street Viaduct replacement project in Hoboken, New Jersey. Completed ahead of schedule, the new 14th Street Viaduct is an eight-span, 1,177-foot-long structure constructed entirely of multi-steel girders and carries the more than 20,000 cars a day, as well as pedestrians and cyclists.
The $54 million project involved the replacement of a 100-year-old span that connected Union City and the Heights of Jersey City to Hoboken, Weehawken, and the Lincoln Tunnel. At the time of its opening, the original bridge, while purely industrial, was considered a complex engineering feat for its time. In 2008, Hudson County commissioned a replacement structure that could better accommodate present-day traffic needs and meet modern safety standards. As a salute to its historical significance, certain elements of the old viaduct are reflected in the design of the new bridge, such as the cross-braced piers and asymmetrical span lengths.
TYLI was responsible for the design of the east and west abutments and the east approach and west retaining walls, as well as the new pedestrian underpass. In addition to preparing construction documents such as plans, specifications, and cost estimates, the TYLI team also oversaw construction inspection and construction management services, including providing a full-time Resident Engineer to monitor all construction activities for the duration of the project.
One of the most complex local roads projects in Hudson County history, it was essential to allow uninterrupted traffic flow over the existing structure during construction. The south half of the old viaduct was replaced first while the north side carried two-way traffic. Once completed, traffic was switched over to the new south side of the structure so that the north side of the original viaduct could be replaced.
For the design of the new pedestrian underpass, TYLI successfully addressed Hoboken residents’ requests for an aesthetic, walkable public area by maximizing usable space through the strategic placement of the piers. Enhancements for this space include raised sidewalks and narrower streets for improved pedestrian safety, a playground, recreation space, and a multi-purpose space for community events.
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