- New Jersey Department of Transportation
- J. Fletcher Creamer & Son, Joseph M. Sanzari
- Fort Lee, New Jersey
- Our Role
- Final Design, Construction Engineering Services.
- 60-foot-long single-span bridge
- Construction Cost
- $4.3 million
- New Construction
- 3 years, 5 months
- Upgraded bridge superstructure improves motorist safety
- Minimal disruption to 63,000 vehicles per day during bridge replacement project
- Improved mobility along a key commuter route into New York City.
U.S. Route Nos. 1&9 and 46 are urban principal arterials that cross Jones Road in Fort Lee, New Jersey, through a 60-foot-long single-span bridge. Approximately 1 mile from the George Washington Bridge, the bridge over Jones Road is part of a major commuter route into Manhattan, with an average daily traffic volume of 63,000 vehicles. Built in 1930 and facing ever-increasing traffic demands, the bridge was classified as structurally deficient because of the poor condition of its deck.
In support of the New Jersey Department of Transportation’s (NJDOT) mission to update deteriorating infrastructure and improve motorist safety, Gannett Fleming designed the replacement of the bridge’s superstructure, working with the J. Fletcher Creamer & Son/Joseph M. Sanzari joint venture. Because the bridge is located beside an elementary school, near a day care center, and within a residential area, NJDOT required a collaborative design and construction approach that would minimize the project’s impact on motorists without sacrificing bridge quality.
The team coordinated with multiple state and local stakeholders to develop a maintenance of traffic plan (MTP) featuring alternate routes to take traffic away from Fort Lee and onto major roadways and interstates during the project. To compress the work schedule, the team used accelerated bridge construction (ABC) techniques, including the installation of prefabricated superstructure units (PSUs). Installing temporary supports on Jones Road to carry stringers that were cut and partially removed during the first construction stage allowed the team to repair the substructure while maintaining the existing footprint.
PSU stringers were placed parallel to the roadway to simplify the framing and better accommodate future staged construction and maintenance operations. Each PSU consisted of two rolled steel beams connected by precast concrete decking. Seven PSUs were installed during two highly concentrated construction cycles. Completing the project using conventional techniques would have taken approximately 18 months. Using ABC, the team replaced the deficient Fort Lee bridge over two weekends, minimizing disruption to the community while upgrading roadway infrastructure and improving motorist safety.
- ABC techniques using seven PSUs reduced construction time by more than 17 months
- Detailed TMP specified alternate routes away from the project site to reduce traffic congestion during lane closures
- Dynamic and variable message signs enhanced motorist awareness of alternate routes, improving traffic flow during construction
- Form liners replicated original bridge balustrades to meet New Jersey Historic Preservation Office requirements.
- Honor Award, 2018, American Council of Engineering Companies (ACEC) New Jersey, Engineering Excellence Awards.