Rainforest
Senior Member
Does it? All 6 of the Spadina extension stations are separate construction contracts. The tunnelling is two contracts (each including one of the stations), but they are still doing Spadina in 3 different chunks of tunelling, as it's not cost effective to do it in one long run. The track will be installed in one contract, but much of the cost is driven by length.
I doubt there's that much savings to be had to build 5 km and 4 stations, compared to 2.5 km and 2 stations (for example). If there was, we wouldn't see 6 contracts for the Spadina line, instead of just one.
I don't know details, but issues that come to mind are: 1) The cost of TBM launch sites; 2) The cost of bus terminals: every interim terminus needs a massive bus terminal, whereas a regular station can do with a small terminal or even with on-street connection.