| The North Shore Connector project will extend the Port Authority of Allegheny County’s Light Rail Transit system 1.2 miles from underneath downtown Pittsburgh and the Allegheny River to the North Shore. The project will support the effort to revitalize Downtown Pittsburgh and the North Shore’s residential areas, business districts, educational institutions, and entertainment developments.
With many historical buildings and elevated highway bents located along the alignment of the project, care needed to be taken to ensure they were not affected by construction activities. Designers implemented a geotechnical and structural monitoring program consisting of traditional survey instrumentation along with modern, state-of-the-art instruments consisting of:
- 117 strain gages and 54 tilt meters on selected bent structures to monitor deflections during excavation
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Circled area is site of S.R. 65 Underpinning activities
- automated total stations and reflective prismatic targets used to measure displacements during the
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load transfer of the underpinning elements.
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