Overland provided comprehensive Subsurface Utility Engineering (SUE) services in support of the proposed replacement of the Webster Avenue bridge over the MBTA right-of way in the City of Somerville, Massachusetts. The scope included utility record research, Quality Level B and C designation of existing subsurface utilities approaching the bridge, attached to the structure, and crossing beneath the rail alignment and Quality level A utility test pitting via non-destructive methods.

Overland performed cleaning and CCTV condition assessments of the City of Somerville sewer infrastructure within the project limits, including segments located beneath the MBTA track alignment. Quality Level A utility test pits were completed using non-destructive air vacuum excavation methods at 25 test pit locations along Webster Avenue and Newton Street. All pavement disturbances associated with test pit activities were restored using permanent hot mix asphalt and infrared repair methods. Concrete sidewalk panels impacted by test pitting activities were fully replaced. Overland also secured and managed all permitting required to execute the test pitting program.