For the Pennsylvania Turnpike Commission’s (PTC) first foray into accelerated bridge construction (ABC), PTC contracted STV to perform construction management and inspection services along the 360-mile-long turnpike. The ABC program supports PTC’s extensive bridge replacement and repair program and minimizes impacts to drivers.
STV oversaw the construction for five bridges located along the Northeast Extension between the Lehigh Valley and Mahoning Valley interchanges. The twin 150-foot-long, two-span bridge superstructures over Brush Creek on I-76 in Beaver County, PA, are the first such PTC replacement that used the ABC methodology. The twin replacement spans were constructed adjacent to the Turnpike and were “slid” into place during a 55-hour window. Three weeks later a three-span, 131-foot-long structure in Lehigh County was replaced.
All bridge replacements featured a significant public outreach component in advance of weekend closures. STV contributed several additional services, including constructability reviews, cost estimating, value engineering, bid reviews and packaging, and project scheduling.
55
hour replacement window
360
miles of turnpike
5
bridges rehabilitated
