Bridge Engineering & Inspection
Client: New Jersey Department of Transportation
As prime-consultant, EWF was assigned by the New Jersey State Department of Transportation to investigate the structural integrity and safety of the Gordon Street Bridge spanning over the Central Railroad of New Jersey, in the boroughs of Roselle and Roselle Park, Union County, NJ. Based on the resulting Topographic and Property Line Survey during the time of inspection and further evaluation of the existing steel truss, the bridge superstructure was recommended to be removed and replaced. The new bridge design was a steel box girder structure with steel floor beams and a concrete deck with new approaches.
Client: NYS Department of Transportation
The Harrison Avenue Bridge over the New England Thruway is a 180-foot long, 64-foot wide structure. The existing bridge is a four-span steel framed structure. The entire superstructure is to be replaced by a new continuous two-span structure with steel girders with a new 7” concrete deck and a new approach slab. All three existing piers of the bridge are to be removed. A new solid concrete pier (at the center pier location) is designed along with existing abutments to support the new bridge. Seismic analysis on the bridge was performed and found that the new superstructure and existing substructure, including abutments and foundations, are satisfactory for resisting lateral forces generated by earthquakes, as defined by AASHTO Code 1992. The new 7” concrete deck will securely function as a diaphragm to transfer and distribute seismic load to the deck supports.
Client: Federal Railroad Administration
EWF, as a sub-consultant to Hardesty & Hanover LLP, provided engineering design services for the Mystic River Bridge project, located in Mystic, CT. The replacement of the Mystic River Bridge, while maintaining the historic character of the original bridge, included the new 963-foot long bridge, which incorporated a 262 foot swing span activated by push-button controls that enable quiet, rapid operation. This section part of the Northeast Corridor Rail Improvement program, consisted of the replacement of the existing tow-track swing bridge at the main crossing of the Mystic River. The construction of the new $21 million project required necessary track alignment and adjustment of profiles to provide sufficient clearance over the river for boat traffic. EWF provided in- house structural engineering services for the project including an effective structural engineering solution to the problem of pockets of unstable organic material in the river bottom. Design included east and west precast, prestressed approach viaducts and trestle, a concrete structure at Bennett’s Cove, causeways and station platforms.