Oh right. The US Interstate System! :-)
Incidentally for a similarly influential person in US history you have to look no farther than https://en.wikipedia.org/wiki/Robert_Moses.
I'm in awe of the audacity of slipping unlimited power to construct roads into a bill about parks, while planning to become the person who would have that power. The authority in question was the ability to construct parks anywhere, and the right to build access roads for them. So he created a series of long narrow parks, and built big fat access roads down the middle. That is why those roads got named, "parkways"!
That said, Robert Moses was certainly a tyrant of urban planning on the same level as Haussmann. White ethnic populations of the Northeast still remember him, and have not yet forgiven him for his habit of running freeways through their neighborhoods -- ruining the neighborhoods in the process, and in many cases driving them out to the ethnically-homogenous blandness of the suburbs.
I'm also reminded of Le Corbousier. Architecture can certainly attract autocrats...
https://benjamin.sonntag.fr/Moglen-at-Re-Publica-Freedom-of-...