After three-quarters of a century carrying treated water from the city into the depths of Lake Ontario, the current outfall tunnel is nearing the end of its service life, lacking the capacity...
The outfall construction sequencing involved, among other elements, sinking a shaft adjacent to the shoreline and then mining a tunnel through rock beneath the lakebed below Lake Ontario.
A 7.95 m (26.1 ft) diameter Robbins Single Shield tunnel boring machine completed, what the company says is, a record-setting run below Lake Ontario. The machine, for the
On Ma, a 7.95 m (26.1 ft) diameter Robbins single shield tunnel boring machine (TBM) completed a record-setting run below Lake Ontario in Toronto, ON, Canada.
This pedestrian tunnel, located 40 metres under Lake Ontario, was recently awarded the Canadian Project of the Year Award for 2014 from the Tunnelling Association of Canada.
Previously reachable only by ferry, the newly designed pedestrian tunnel at Billy Bishop Toronto City Airport provides a quicker, more convenient passage for travelers. The 853-foot tunnel spans the
A 9.5-ft. (2.9 m) diameter double shield rock tunnel boring machine (TBM) is currently at work mining the 6,000 linear ft. (1,829 m) tunnel under Lake Ontario.
The last kilometer of tunnel, bored below a series of 50 risers under Lake Ontario, was challenging but ultimately successful. The project won accolades from the Tunnelling Association of Canada (TAC) in
The Thorold Tunnel is an underwater tunnel in Thorold, Ontario, Canada carrying Highway 58 underneath the Welland Canal. Built between 1965 and 1967, the tunnel is 840 metres in length and
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