Re: aside- Bunbury St Tunnel

[david <david@nmit.vic.edu.au>]

Maurie Daly wrote:

> >> In the case of the Bunbury st tunnel in Melb it should be possible to close
> >> one line and lower it whilst keeping the other line open,so a alternative
> >> route via Roto would then only involve one tunnel.
>
> >I bet that would be expensive, almost as much as 'daylighting' Bunbury tunnel.
> >Al those
> >houses to  try to aquire, bridges to build.....
>
> >Regards,
> >David HEad
>
> Sorry , you have lost me here, why is it necessary to acquire any houses or
> build bridges to lower the floor of Bunbury St tunnel. ?
>
> MD

Sorry, thought lowering the tunnel may not be feasible,and opening it up ( as a cutting
with bridges)may be the other expensive choice - how much lower could they go in
lowering the tunnel and still negotiage the bridge ?