4 ms·
Cut and cover though. Dig a cutting in a road. Put the top back on. Met line, District line, Circle line.
by DrBazza 4y ago
Cut and cover though. Dig a cutting in a road. Put the top back on. Met line, District line, Circle line.
- bluGill 4y agoIf you are cleaver you can put the top on and then dig things out under. Lots of weird and hard to explain variations like thus exist that are just as cheap as digging and then putting a top on. But instead everyone wants to go for expensive tunnels first despite not being needed. We really should do more elevated rail, which is a lot cheaper than digging.
- foldr 4y agoThere's absolutely no way that Crossrail could have been done with cut and cover. Take a look at this diagram of Bond street station, for example: https://www.researchgate.net/figure/3D-model-view-of-Bond-Street-Station-Upgrade-Existing-tunnels-in-transparent-colours_fig1_318128851 https://www.researchgate.net/figure/3D-model-view-of-Bond-St... You can't dig up the area around Bond street and close down existing tube services during construction. (The crossrail tunnels run under some existing lines.)