Two I’m familiar with… Placemark: Google Maps / Google Earth Cutler Circle, Revere, Mass., USA, has two bridges, technically an unfinished freeway, that had been planned to extend Interstate 95 north from Boston north to Peabody, a stretch named Northeast Expressway (the complement of the existing Southeast Expressway), but environmental concerns about the planned route through marshlands and a major city park canceled the project. Placemark: Google Maps / Google Earth Washington State Arboretum, Seattle, Wash., USA: These stubs were intended to form the R. H. Thompson Expressway, which would have served as an Interstate 5 bypass from Interstate 90 to [...]