I came across this suggested freeway plan for Pittsburgh from 1963. Most of it hasn't been built (and won't be) because of the regions declining economy, and while I'm not a fan of the local recession, I am glad these planners didn't get a chance to completely screw up a lot of great neighborhoods.
So, does anyone else have freeway plans of what could have been (for better or for worse)? I know these have been posted hodge podge on other threads, but I think it would be neat to bring them all together to one place.