PennDOT, District 4-0 Green Ridge Street Bridge

Given the site’s constraints and its importance to local traffic, the replacement of the bridge required a broader engineering study was required beyond traditional preliminary design methods. A concept study was conducted to explore design alternatives, factoring in construction cost, environmental and utility impacts, property requirements, and risks tied to the levee and construction conditions. 

Following analysis of traffic control options and significant public engagement, the team selected a temporary bridge and roadway to ensure continued traffic flow during construction. The new structure, a single-span steel plate girder bridge, accounted for the area’s hydraulic complexity, nearby structures, unique utility attachments, and future trail access. The project’s approach prioritized minimal disruption while addressing design challenges and long-term community needs. 

Extensive utility coordination was a major component, involving five overhead and multiple underground lines. Relocations were carried out with detailed planning, including temporary line capping and integrating utility work into the construction bid. The environmental clearance process included hazardous waste assessment, historic resource evaluations, Section 4(f) considerations for the Lackawanna Valley Heritage Trail, and coordination with the U.S. Army Corps of Engineers due to the site’s proximity to the river’s levee and flood walls.