I-95 Alexander Hamilton Bridge, Cross Bronx Expressway Rehabilitation

As a major teaming partner, Arora and Associates, P.C. was responsible for field inspection and bridge deck and substructure rehabilitation design for 6 bridges on ramps connecting the Cross Bronx Expressway with the I-287 Major Deegan Expressway and Alexander Hamilton Bridge.  Arora scope on this project included the final design of 22 spans ranging in width from 32 feet to 54 feet, with   a   total    length   of approximately 1900 feet consisting of plate girder and built-up steel sections with composite and non-composite reinforced concrete decks. Arora provided in-depth inspections, interim repairs, preliminary and final designs, staging plans and rehabilitation reports for the rehabilitation, seismic retrofitting, and deck replacements for nine approach ramps on tangents and curves at varying skews. The in-depth inspections and findings included the approaches, decks, superstructures, substructures, foundations, lighting, deck evaluation and steel detail vulnerability assessments. Deck replacements were isotropic cast in place concrete, staged to sustain the traffic needs of the facility, and replacement of the bridge railings and safety walks with single slope concrete barriers and flush shoulders to improve safety. The decks, deck joints and bearings of all the bridges were replaced under complex construction staging and specific traffic controls.  All work was performed within the allocated budgets and schedule.