Metrolinx:
An overview of the excavation site for the shoring wall for the future rail-over-road underpass at the South Blair Street level crossing in Whitby. The underpass will improve pedestrian, rail and vehicular traffic flow in the area.
Metrolinx:
We can excavate very close to the tracks by driving piles along each side and building a shoring wall between them to retain the soil.
Metrolinx:
Drilling under the CN Kingston subdivision to install horizontal tiebacks (steel rods that hold the together piles on each side) that prevent the shoring wall from sagging under the weight of the retained soil.