Most went to unions, I believe.
You got that right. The whole claim of "infrastructure" spending and "shovel-ready" projects was just a tiny part of the entire stimulus bill. Less that $50B of the bill was even
intended to go to roads, bridges, etc.. The vast majority of the money was shoveled to public sector union members and various pet lefty projects. They tried to portray it as an infrastructure bill because they knew that was an easier sell to the public, but it wasn't.
The Senate GOP tried to increase the amount of actual road/bridge construction to $100B, but were shot down. So the truth is that there was never a trillion dollar, $800 billion dollar, or even $100B infrastructure bill.