[mirkonasato]

The MOSE project is supposed to protect Venice from high tides, with mobile barriers: https://en.wikipedia.org/wiki/MOSE_Project

Unfortunately it's been under planning first and then construction for decades, mired by corruption scandals, delays, and billions of Euros in cost overruns. It's currently scheduled to be delivered by the end of 2021, having first been put out to tender in 1975.

[GrumpyNl]

2022 according to this article https://venezialines.com/blog/venice-sinking-will-happen/

[mirkonasato]

31 December 2021 is the official deadline. http://www.ansa.it/sito/notizie/flash/2019/09/12/-mose-conse...

[fwip]

I hear some people saying that by the time it's built, rising sea levels may have already obsoleted it.

[droithomme]

Venice was built on marshy landfill in a lagoon and has sunk 23cm in the last century. This is the main problem here. It will continue sinking and there's no way to make that stop as you can't build stable foundations under an entire stone city built in the actual sea on top of mushy mud and not anything stable. Venice is and always has been inevitably doomed due to poor engineering choices made centuries ago. Same goes for much of New Orleans.

[mirkonasato]

The fear is that the gates will need to be closed too often and for too long, damaging the lagoon’s ecosystem: https://www.nature.com/articles/d41586-018-07372-3