As part of an interchange modification project to improve efficiency and safety along a 0.22-mile segment of Glebe Road over Route 50, Volkert designed the rehabilitation of a deteriorating single-span built-up plate girder bridge, 110 feet in length.
Volkert conducted an impact and performance study of various widening alternatives in conjunction with bridge rehabilitation, which indicated that girder and substructure repairs and deck replacement would be the most feasible option.
To accelerate construction through 10 phases of construction, precast-concrete slab units were used for the deck replacement and night construction avoided traffic impacts and delays during the day in this very congested area.
The design included a new concrete deck, new wing walls, and widened abutments on spread footing foundations to accommodate bridge widening of the north- and south-bound lanes, a shared use path on one side and a sidewalk on the other, decorative wrought-iron picket fencing, gateway pillars and LED lighting, improved site distance for right turns, and new signals. The design also included abutment repairs, steel-beam repairs, bearing replacements with elastomeric bearings, and superstructure painting.
Scope of Work: Bridge Rehabilitation, Bridge Widening, Bridge Lighting, Construction Phases Services, Safety Enhancements, Accelerated Construction