In the US, eminent domain has been used primarily to build and widen highways and other large arterial roads. This use has often been highly destructive, destroying whole neighborhoods, disproportionately black and immigrant neighborhoods, like Cleveland's "big Italy" that was destroyed by highways.
There is no reason why we could not also use eminent domain to promote walkability, bikeability, or public transit.
Eminent domain could be used to take a small portion of front yards to build a sidewalk. Or to seize a narrow strip of land between two houses to put a walk+bike path connecting two streets, cutting up a long block and decreasing the distance people in a neighborhood need to walk or bike to get from point A to point B.
These uses would be less disruptive than historical uses of eminent domain, and would cost a tiny fraction of the cost of highway building or even basic road widening. They might even increase property values if they made a neighborhood more livable and reduced traffic.

















