This is a significant portion of the cost, huge amounts of 'green tunnels' and cuttings are being created where they are not needed.
[1] https://www.theguardian.com/uk-news/2024/nov/07/cost-of-shed...
Assuming not.... No. The premium cost on the project related to its running speed is not significant. Planning and engineering a brand new 125mph railway doesn't cost much less than planning and engineering a brand new 250mph railway.
Or does a 75mph freight railway cost as much as a 250mph passenger railway?
A reminder that the cost of the project, even unfinished, with none of the benefits of the lines to Manchester and Leeds, is of the same order as NASA's current moonshot budget.
For the WCML specifically, _we already did that_ in the form of the modernization program (early-2000s) which was over 10 years of disruption, and massively expensive.
And HS2 isn't just for freight, it's also for providing higher capacity and frequency of local stopping passenger trains. The WCML already connects the population centres, so the local stopping trains have to stay there. The thing that really kills capacity is the co-mingling of 125mph and lower speed (90/75) traffic. Remove the 125mph traffic (onto, say, a dedicated high-speed single-mode line) and you _massively_ increase capacity on the existing line.
> A reminder that the cost of the project, even unfinished, with none of the benefits of the lines to Manchester and Leeds, is of the same order as NASA's current moonshot budget.
This is not a railway problem. This is a government problem.