New hampshire avenue bridge
The New Hampshire Avenue Bridge, originally constructed in 1933, was a single-span, multi-girder steel bridge, built over the CSX railroad and METRO tracks and located in Northeast Washington, DC. Volkert’s initial task was to evaluate the structural condition of the bridge using the NBI guidelines, perform geotechnical studies, document bridge and roadway deficiencies and prepare alternative solutions. Volkert developed two alternatives and recommended complete replacement of the existing bridge along with associated roadway improvements.
The design of the new bridge met AASHTO and FHWA standards and included replacement of the existing structure, approach, barriers and railings. The replacement bridge is 125 feet in length and consists of ten steel plate girders with a concrete deck. The design incorporated phased construction to maintain railroad, vehicular and pedestrian traffic throughout construction. The design increased the bridge underclearances and improved handicapped access to pedestrian facilities.
The roadway design included replacement of pavement structures, curbs, gutters, sidewalks, drainage structures and utility work. The work included new roadway lighting and traffic signals, design of communication cable, design of erosion and sediment control plans and subsequent permitting, and maintenance of traffic plans.
Volkert closely coordinated with CSX railroad and WMATA to meet railroad requirements and ensure approval by the railroad owners.
Services Provided: Civil Engineering, Lighting Design, Utility Work, Maintenance of Traffic