The $54 million replacement for the 14th Street Viaduct in Hoboken, New Jersey, was constructed with the existing viaduct in place to allow continuous traffic flow through the vital artery from Hoboken to local points west in Union City and Jersey City. The project was the product of a lengthy scoping process and more than $3.8 million in pre-construction planning and design work. T.Y. Lin International (TYLI) provided design and construction management services for both phases.
The new bridge, carrying over 20,000 cars a day, follows the same horizontal alignment, with widening of the roadway and sidewalk on the south fascia to allow for construction staging. The new eight-span bridge is 1,177 feet long and constructed entirely of multi-steel girders. The spacing pattern of the new piers supporting the viaduct is the least disruptive possible in order to maximize public use of the area beneath.
As part of the Design Team, TYLI provided engineering services for the design of the east and west abutments, the retaining walls on the east and west end approaches, the pile-supported foundation for the retaining walls and abutments, and the pedestrian underpass at Clinton Street. The scope of work included preparing construction documents comprising plans, specifications, and cost estimates. In addition, Hudson County selected TYLI to provide Construction Inspection and Construction Management Services for this project.
- TYLI designed a shallow-depth, pile-supported foundation to minimize excavation, handling, and disposal of contaminated material discovered at grade.
- Staged construction allowed two lanes of the non-redundant arterial to remain open while construction took place on the other two lanes.
- TYLI provided a fulltime Resident Engineer to monitor all the construction activities for the entire duration of the project.
- The area under the new bridge was converted to public space, including the construction of two open-space areas for public gathering.