There's a common feature of massive complex projects the world over - they pretty much always come late and massively over budget. Then as infrastructure mostly end up sticking around for a century or more, sometimes limiting future choices.

Rail, tube and tram lines will still be there and graded 100 years later - after track replacements, roads are not dissimilar, reservoirs and storage caverns far longer with a turbine replacement or two. Nuclear on the other hand has a much more limited life in which to absorb those overruns.