As an American I'm just assuming that road was moved to be widened and a bunch of low income housing and many blocks worth of historic buildings were demolished in the process.
Low income housing is a far better use of space than preserving "historic" buildings that are actually just out of code, poorly designed, and slowly decaying old houses that never actually had any historical significance.
The needs of people who are alive and struggling today are infinitely more important than your nostalgia for the homes of dead rich cunts.