Toronto launches $3B project to improve water quality in Lake Ontario and city's waterways.

The first phase of the five-phase project — the Coxwell Bypass Tunnel — will see a 10.5 kilometre long and 6.3 metre wide tunnel built at a cost of $400 million. The overall project is expected to cost $3 billion.
https://www.cbc.ca/news/canada/toronto/toronto-storm-water-wastewater-management-program-1.5396886

America's Cold War "Rock Site" plans
"A tunnel boring machine could be lowered into the shaft in pieces and then assembled to bore out more tunnels, including one for a small modular nuclear reactor much like those used at Camp Century in Greenland and McMurdo Base in Antarctica."

https://nationalinterest.org/blog/buzz/cold-war-secrets-how-us-navy-planned-spy-russia-underwater-103427
#ColdWar

I think this article demonstrates the split between de industry and the academia.
At least this assistant professor (of geology and geological engineering at the University of Mississippi) is candid about it.

https://msbusiness.com/2019/12/um-engineering-professor-lance-yarbrough-assists-in-delaware-aqueduct-bypass-project/

MSD is now right under Spaghetti Junction

https://www.wdrb.com/news/million-underground-msd-tunnel-reaches-spaghetti-junction/article_7039bc5a-17a5-11ea-b662-a31f032cf047.html