The District 3-0 Central Susquehanna Valley Transportation (CSVT) Project was a 12-mile highway project implemented by PennDOT to ease a major traffic bottleneck through portions of Northumberland, Snyder, and Union Counties. NTM was involved with the project’s 2D model task for the project’s Northern Section in Northumberland and Union Counties, which featured a 2D hydraulic […]
Constructed in 1923, the Arch Street Bridge (SR 2064) is a state-owned seven-span steel truss bridge that carries SR 2064 over the West Branch Susquehanna River between Duboistown and Williamsport. Due to structural deficiencies and substandard horizontal and vertical geometry, it will be replaced with a 12-span, concrete girder bridge approximately 40 feet upstream of the […]
For the Stone Arch Bridge Program in Lehigh Valley Transportation Study (LVTS), NTM is performing H&H and waterway permitting services for the rehabilitation of five stone arch bridges in Lehigh and Northampton Counties. NTM’s services are for SR 4018 (Main Street) over Trout Creek/Branch of Trout Creek in Washington Township and SR 2026 Section 01B […]
PennDOT tasked NTM Engineering with evaluating the effects of replacing the existing 18-foot, single-span concrete stringer bridge over Mackey Run with a cast-in-place, reinforced concrete box culvert with fish baffles in a new location. The proposed location is about 150 feet north of the existing bridge, but is maintained on the existing SR 2006 horizontal […]
Under the Philadelphia Water Department’s Green Streets Initiative (GSI), NTM provided conceptual and final designs for the Cayuga Street green storm sewer system. The green storm sewer system will convey runoff to a subsurface infiltration system, designed by others, that will be constructed beneath the Ferko Playground in Juniata Park within the City’s northeast […]
The SR 4006 Kiester Bridge project includes replacing an existing two-span steel I-beam bridge with a single-span steel girder bridge. NTM performed stormwater management, erosion and sediment control, and drainage design; hydrology and hydraulics analysis; and NPDES permitting for this project in Slippery Rock Township.