Re: Lords Cricket Ground disused tunnel

On 17 Apr, 23:52, Tom Anderson <t...@urchin.earth.li> wrote:
> You'll see that between Dalston and Highbury & Islington, the NLL-ELLX
> route is four track, but paired by destination, with the ELL tracks to the
> south of the NLL. Tracks continue to the west of H&I only from the NLL.
> That means that, even with crossovers in the right places, trains could
> only run from the ELL to the west by making a conflicting movement over
> the eastbound NLL track, which, given the frequencies involved, is
> basically a no-no. And i'm not even sure there are crossovers in the right
> place.
>
> The upshot of this is that the ELL will run only to H&I, which will leave
> the ELL and NLL as completely segregated services, maximising their
> reliability and potential frequency. Short of throwing in a flyover at
> Dalston, there's not really any way to deliver a practical railway other
> than this.

The viaduct is wide enough for four tracks all the way to the junction
west of Camden Road Station, where it inexplicably narrows to two
before diverging. If the viaduct was widened here for 500ft or so to
enable the two services to remain separate, you could continue have
totally separate ELL and NLL services; The ELL to Willesden Junction/
Queens Park via Queens Park, and the NLL to Willesden Junction via
Hampstead.