You should look at Dutch cities, for example Utrecht got rid of a huge chunk of hideous highway in the center of the city and in its stead is now a beautiful canal with one the busiest bike-traffic streets in all of Europe.
https://bicycledutch.wordpress.com/2016/01/05/motorway-remov...
Yanks could do the same if they wanted to, but unfortunately they've been brainwashed into thinking walking is the devil