It's not just 20th st, either. They've done this all over the neighborhood, from Bainbridge down to Carpenter, 20th up to 25th! I am a dog walker, and I've had to walk clients' dogs in the road for several weeks, because they demolish every corner on the intersection and leave you with no choice but to walk in the street. It's very dangerous, and poorly planned. They should plan to reconstruct each corner within a few days of demolishing it, or, barring that, at least have the forethought to leave one side of the intersection undemolished so people have a place to walk while the other side is worked on.