ST CLAIR RIVER RAIL CONNECTION

CASE STUDY: With EPB technology in its early development, and with compressed-air, hand-excavation of the first rail tunnel under the St Clair River one hundred years earlier as their guide, engineers were convinced that pressurised mechanised TBM technology with a modern bolted and gasketed precast concrete segmental lining was the choice to be made in the early 1900s for the new larger diameter replacement subaqueous rail link.

The St Clair River tunnel crosses the Canada/USA border