Large infrastructure projects like this are paying it forward. They are a gift to future generations who will reap the benefit without having to pay for it, just as we have benefited from inherited infrastructure of our cities.
Thanks to deficit spending they will be paying for it.
The only people getting a gift here are the ones fleecing the government to run up the costs. They get their money now and all our kids and grandkids get the bill.
If you want to ask the size of those benefits, imagine London or New York without their underground/subway systems. It is a big deal and can't just be counted by ticket prices!
Actual growth might not, but as most infra spending is financed with fixed rate bonds, a couple more years of Biden’s 9.6% inflation will take a nice bite out of those costs in future dollars.