Location Harrisburg, PA
Client Pennsylvania Turnpike Commission
Services Construction Inspection, Construction Management
Project Value $68 million
Hill is providing construction management (CM) and construction inspection (CI) services for the $68 million replacement of the Hawk Falls Bridge at Milepost (MP) A88.59 of the Pennsylvania Turnpike Northeastern Extension (I-476) in Penn Forest and Kidder Townships, Carbon County.
The existing bridge is a 750-foot, three-span, steel deck truss bridge that carries the Turnpike over Mud Run. The Pennsylvania Turnpike Commission is replacing the bridge because it is nearing the end of its design service life and considered functionally obsolete due to lack of roadway shoulders. The replacement bridge will consist of a 480-foot open spandrel steel arch with two 60-foot back spans at both ends of the arch for a total structure length of 720 feet. The bridge’s typical section is supported on a girder/floorbeam superstructure system with three lines of steel columns supported on the steel arch ribs spaced at 39 feet center to center.
The project also involves the replacement of a second bridge at MP A88.90. This bridge is a 112-foot, three-span, continuous steel bridge carrying I-476 over Hickory Run Road (SR 0534) directly north of Hawk Falls Bridge. The new bridge will have a 120-foot, single-span steel multi-girder superstructure. The project team will also reconstruct and realign approaching roadway to the east of the existing alignment. The realignment is required to maintain traffic during construction and helps minimize environmental impacts. A typical section of the new roadway will consist of two 12-foot lanes with 6-foot left and 12-foot right shoulders in both the northbound and southbound directions. The overall project limits are from MP A87.67 to MP A89.86.
As construction manager, Hill will provide cost, schedule, and quality control during the construction phase. The Hill team will also help ensure compliance with all Pennsylvania Turnpike Commission, State, and Federal highway construction requirements. The Hill team’s tasks include validating estimates, approving payments, leading meetings, administration, scheduling, field geotechnical assistance, surveying, environmental monitoring, safety, change order management, public relations services, project close-out, as well as coordination with PennDOT, the PA Department of Environmental Protection, other State agencies, municipalities, utility companies, and neighboring property owners.