Read through the bill. Search up H.R.227... if your into links https://www.congress.gov/bill/117th-congress/house-bill/227/text?r=1&s=1. If you want to be thorough, there will be several substantial detours to understand where the 9 trillion dollars will be funneled and why only 3 trillion of that amount will be used for actual upkeep/new projects but it'll be well worth your time. We can compare notes afterward.
Comparing the Build America Act to the New Deal doesn't make too much sense. The biggest factor, aside from 6 trillion dollars disappearing from the project into accounts that will not have oversight, are the current policies which pay people quite well to not work. During the Great Depression people jumped at the change to work for pay and by investing in those people via the creation of infrastructure, it stimulated natural economic recovery. H.R.227 isn't that. It's a tax revenue shell game, will make petroleum prices raise by nearly double and is rather moot considering the other policies that are in place which dilute or directly oppose stimulation efficacy.
I would be all for an infrastructure bill that was just about infrastructure and energy production. Personally, I'd love to see a bill passed for a nuclear facility to be built.. or several. But politicians are going to politician... they seem to insist upon squandering our taxes and national recourses on dumb crap. Well... 2/3rds of it anyway.