Do you have some examples, just to get an idea of the problem?
We were promised that our senior year would be in the new facility. However the school got hit with environmental studies around a specific species of endangered frog that was known to inhabit the area, and construction did not complete until 5 years later
In Europe, public works have less barriers of that type, as it's assumed they are for the general good, whereas private projects are required to demonstrate it.
https://www.theatlantic.com/ideas/archive/2021/03/signature-...