Legacy actually started under Clinton and I am too lazy to look it up, but I would bet a lot of Trax and FrontRunner also happened during the Clinton and Obama years.
And if you are just going to point to individual projects, then you would have to concede that both Dems and Repubs are probably doing good work, because there is a shitton going on in every state every year. In fact, the Obama years saw all sorts of infrastructure projects. https://www.brookings.edu/blog/the-a...act-taught-us/