• Corporate HQ, NY
  • Melville, NY
  • Iselin, NJ
  • Ossining, NY
  • Mount Laurel, NJ

PTC Replacement of Bridges EB-312, EB-313 and EB314


HAKS prepared final design and bid documents for the replacement and widening of approximately 1.5 miles of limited-access highway, three mainline bridges, associated structures, additional roadway improvements, drainage and permitting for the Pennsylvania Turnpike from MP 250.76 to MP 251.17. The project is located in Middletown Borough, Lower Swatara Township and Londonderry Township in Dauphin County. 

The mainline was symmetrically widened from four 12-foot lanes, with 10-foot outside shoulders and a 10-foot-wide median, to six 12-foot lanes, 12-foot outside shoulders and a 26-foot-wide median. To minimize right-of-way and environmental impacts and provide adequate room for stormwater management features, HAKS designed two 800-foot-long MSE and two 160-foot-long cast-in-place retaining walls. To accommodate post-construction stormwater management features, the HAKS team coordinated three complete and three partial property acquisitions. A comprehensive construction sequencing and traffic control plan was developed to completely reconstruct the mainline to ensure that two lanes of traffic were maintained in each direction at all times during construction.

The replacement bridges consisted of two single-span P/S spread box beam structures over SR 2003 and Middletown Hummelstown Railroad and a four-span continuous steel plate girder structure over Swatara Creek and Swatara Creek Road. They replace single-span reinforced concrete T-beam bridges and a six-span steel riveted-plate girder bridge. Substructures consist of cast-in-place abutments and piers founded on spread footings and pile foundations.

The project included design of 7,600 lineal feet of ground- and structure-mounted sound barriers to abate traffic noise. HAKS coordinated with impacted properties and local and state agencies to determine the architectural treatments for the barriers. Other project highlights include utility coordination and relocation, the design of an extensive E&S plan, a wetland mitigation site, and post-construction stormwater management measures, including inlets, pipes, headwalls, detention basins, swales, and a detailed H&H analysis of the Swatara Creek for a construction causeway. To meet the requirements of the contract and minimize delays during construction, the HAKS team coordinated with federal, state and local agencies to obtain all necessary permits.

Construction on this $48 million project began in early 2014 with anticipated completion in 2016. HAKS is currently providing construction support services.