[Mr Downtown]

The mayor's a fan of Chicago's bridges as one of the things that give Chicago its character. He quietly set this preservation effort into motion a few years ago.

As for the St Charles Air Line, the longstanding plan is to use it as a greenway connecting lakefront and riverfront. Personally, I find it worrisome to give up a potentially valuable transit right of way for a strip of parkland.

The viaduct recently demolished between the river and the UPS campus was the Baltimore & Ohio Chicago Terminal RR, not the SCAL.