The construction of a portion of I-90 in the South Boston area from a location north of Mt. Washington Avenue to the Temporary South Boston Bypass Road. The surface road restoration shall include bituminous concrete pavement, cement concrete sidewalks, driveways, drainage, signage and striping. The work also includes construction of approximately 600 linear feet of West Surface Road Extension. This surface road work shall include bituminous concrete pavement, cement concrete sidewalks, driveways, drainage, signage, street lighting and striping.
Additional work includes construction of a water line.
The work requires removal of an existing temporary roadway, maintenance of pedestrian and vehicular traffic and construction of a paved parking area consisting of bituminous concrete paving, grading, fencing and landscaping. Other major work shall include the critical excavation support at the 249 and 288 A Street properties which includes construction of slurry walls and tieback installation. Additional work shall include temporary support of excavation systems, groundwater control including cut-off walls, instrumentation program, temporary and permanent utility relocations including sewer, water, gas, telephone and fiber optics communication. The Work also includes the critical excavation support at the Bloom South and Gurney property, which includes construction of a slurry wall, tieback installation and building underpinning. Additional work includes the removal and disposal of non-hazardous and hazardous excavation materials.