City Comforts describes an innovative project in the US to turn an overpass into a normal street.
City Comforts Blog: Hello Columbus to the I-670 Cap
Of course, those with a sense of history will know that this is far from a new concept. Only a few centuries ago, London's Bridges were covered with buildings in exactly this manner. Still it's an interesting idea and one I've stored away for potential use in Estates Gazette at some point.
Innouncement!!!