Can Biden’s plan to remove urban highways improve the health of American cities?

Mandela Parkway, a four-lane boulevard enhanced by a median with trees and a curving footpath, stretches along a 24-block section of West Oakland. It’s the fruit of a grassroots neighborhood campaign to block reconstruction of an elevated freeway leveled by the Loma Prieta earthquake in 1989 and reimagine the thoroughfare to replace it.