The in-principle approval is the second stage in a three-stage process,
and will be followed by the signing of a formal agreement between the
city council and provincial and federal governments, which are each
providing a third of the funding.
The line will run for 12.5km from Tunney's Pasture to Blair Road, with
a 3.2km underground section in the city centre. Preliminary engineering
will be completed in 2012 and construction will start in 2013, with the
line scheduled to open in 2019.
During July, 23 geotechnical boreholes were drilled along the proposed
route of the city centre tunnel. The city council says the initial
results of these surveys look promising, and geotechnical work will be
completed at the end of next month.