Inter-Island Tunnel

Inter-Island Tunnel


Massachusetts

The Inter-Island Tunnel project was developed through Boston blue clay, glacial till and boulders.

Deere & Ault Consultants, Inc. staff oversaw development through the smaller soft ground tunnel portion of this project. The tunnel was temporarily supported by steel liner plates, with the final support being cast-in-place by concrete.

Deere & Ault’s staff also inspected the cut-off grouting operation for the longer hard rock TBM tunnel drive through Cambridge Argillite.

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