Junctions in Tunnels

[matchmaker]

If we're including crossovers, there is at least one inside the Glasgow Queen Street tunnel

There are two.

 

[randyrippley]

Whichever tunnel the Strat*gic Res*rve has been moved to now must have a junction?

More seriously doesn’t the new Kings Cross layout add more junctions than now within the tunnels, some of which are well before the station?

Wasn't there one in Box Tunnel to access the quarries / secret base?

 

[swt_passenger]

Wasn't there one in Box Tunnel to access the quarries / secret base?

I can’t say, obviously...

 

[alangla]

There are two.

And another just inside the tunnel mouth east of Exhibition Centre. A 318 rolled over there after a low speed derailment

 

[sammorris]

Also OT, but there’s technically one in the Limehouse Link in East London.

Isn't there an underground roundabout somewhere in the Docklands? Can't recall where, though...

 

[si404]

Isn't there an underground roundabout somewhere in the Docklands?

I mentioned it upthread in post #24

Can't recall where, though...

[https://www.google.co.uk/maps/searc...9,-0.026523,16z/data=!3m1!4b1?hl=en]Westferry Circus[/url] - between Canary Wharf and its pier.

There's a roundabout above, and one below.

 

[Supercoss]

Here is Midland Road 'scissor' crossovers just North of St Pancras Low Level

http://bed-pan.homestead.com/midlandRdScissor.JPG

 

[johnmoly]

Slightly OT, I seem to recall that there is a junction in a road tunnel - this being in the Mersey Tunnel - which is probably unique.

Correct, it is the Queensway Tunnel that has two branches off to the docks at both the Birkenhead side and Liverpool side. The Kingsway Tunnel did have plans originally for a branch to Wallasey docks but this didn't happen.

 

[DimTim]

Looking on Google Earth, Nunnery Main line junc. North of Sheffield is not visible. Whether the length of the underbridge counts as a tunnel. I’ve seen similar underground lengths classed as tunnels elsewhere.