Ottawa Rapid Transit Network developments

[eternallyme]

Originally Posted by Franky

If the tunnel extends all the way to Lees ave., do you think there would be enough room now to run a tunnel from Nicholas to the Macdonald Cartier bridge using the same oval TBM resulting in 3 truck lanes to bypass King-Edward and centre-town? We've had a few deaths and close calls that could be avoided with a tunnel. About $100M/km for 2 km or about $200M, probably a bit more. Maybe Richard's idea of purchasing the TBM would make sense in this case or at least getting some sort of package deal?

4-lanes in a single bore:

http://blog.seattletimes.nwsource.com/northwestvoices/2009/04/23/tunnel_to_replace_viaduct.html

16.5 m diameter! 214 m^2; 214,000 m^3/km 214/140*45 = ~$70M/km (+$35M/km for ventilation, asphalt) more for the support structure, but 4 lanes.

That would be a totally separate project, but badly needed as well.