Pennoni Project Recognized as "Project of the Year"
The South Jersey section of the American Society of Civil Engineers (ASCE) named the Burlington Bristol Bridge Counterweight Repair Project as the Outstanding Civil Engineering Project of the Year. The project, which consisted of three separate tasks, was designed by Pennoni, who currently serves as the “Engineer of Record” for the Burlington County Bridge Commission.
Built in 1931, , the 2,300-ft. long Burlington Bristol Bridge crosses the Delaware River from Burlington, NJ, to Bristol, PA, and has one of the longest vertical opening lift span highway bridges in the country. The vertical operation of the 540-ft. long lift span is assisted by a pair of 1.2 million lbs. reinforced concrete counterweights. For this project, the three separate counterweight repair tasks included: (1) repairing the deteriorated concrete surface of the counterweight by chipping away the old concrete, patching those areas, and placing a glass fiber reinforced polymer composite containment system around the entire counterweight; (2) replacing the existing top steel covers, which are used to keep water and other elements from entering the balancing pockets of the counterweight; and (3) replacing the steel counterweight guides, which run along a tower-mounted rail to keep the free-hanging counterweights aligned with the bridge towers.
The project began in May 2014 and was completed in May 2016. All repairs to the counterweights were completed with the counterweights in the raised position, approximately 75 ft. above the bridge roadway surface. During construction, the bridge remained open to both vehicular traffic on the bridge and marine traffic on the Delaware River.
The complete project team included designer Pennoni, contractor IEW Construction Group, and Environmental Resolutions for construction inspection. South Jersey ASCE presented the award to the Burlington County Bridge Commission and members of the project team at the 37th Annual SJ ASCE Awards Luncheon on Friday, June 17, 2016.