H&H Projects

Scudder Falls Bridge, Interstate 95 over Delaware River

Client: Delaware River Joint Toll Bridge Commission
Location: Bucks County, PA and Mercer County, NJ

NTM provided support to Trumbull Corporation for hydrologic and hydraulic (H&H) analysis of the Delaware River and permit modifications for the Scudder Falls Project. The project included performing H&H analysis for the temporary construction conditions for the Interstate 95 (I-95) crossing over the Delaware River (locally known as Scudder Falls Bridge). The Scudder Falls Bridge […]

Quantifying the Functional Credit Gain Using the Function-Based Aquatic Resource Compensation Protocol

Client: Philadelphia Water Department
Location: Philadelphia, PA

NTM Engineering quantified the Functional Credit Gain (FCG) associated with project study areas using Pennsylvania’s Function-Based Aquatic Resource Compensation Protocol (Compensation Protocol) for the Cathedral Run and Wises Mill Run stormwater management projects and the Wises Mill Run and Gorgas Run stream restoration projects, in Philadelphia, Pennsylvania. NTM created GIS-based stream assessment reach (SAR) and […]

Germantown Flood Relief Capital Improvement Plan

Client: Philadelphia Water Department
Location: Philadelphia County, PA

For the Germantown Flood Relief Capital Improvement Project, NTM assisted in the data collection and reviewed data of previous studies including the AIM1 Report. NTM provided insights on integration of the existing system and alternatives with the upstream/adjacent watershed, utilizing knowledge from experience and modeling with the Act 167 stormwater management plan. NTM Engineering evaluated the existing EPS Stormwater Management Model (SWMM) for input data accuracy, including […]

Arch Street Bridge Replacement (SR 2064) over the West Branch Susquehanna River

Client: PennDOT District 3-0
Location: Borough of Duboistown and City of Williamsport, Lycoming County, PA

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 […]

Stone Arch Bridge Program in LVTS

Client: PennDOT District 5-0
Location: Lehigh and Northampton Counties

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 […]

Cayuga Street/Ferko Playground Storm Sewer

Client: Philadelphia Water Department
Location: Northeast Philadelphia, PA

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 […]

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H&H Projects

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