From a binder that was being passed around the bus during the 2013 Forgotten Chicago <i>Industrial Might & Architectural Surprises Bus Tour</i>: "...(never)-built 1958 Double-Deck Suspension Bridge & Causeway from 79th Street to Gary." Unfortunately this proposed but never built bridge was not discussed during the tour (was it?) and I haven't been able to find anything on The Google. I posted this image on my flickr page ([url=http://www.flickr.com/photos/nvaughn/9000440119/]http://www.flickr.com/photos/nvaughn/9000440119/[/url]) and a friend commented: "According to an article in the Chicago Daily Tribune on November 6, 1958 ("2 ARCHITECTS GIVE PLAN FOR BISTATE PORT"), it was proposed by architects R. Donald Jaye and Humen Tan. '[T]hey were offering the plan to the city in the hope of stimulating interest in a combined Illinois-Indiana port.'"
Any other info would be appreciated--this causeway seems like an insane idea, and I want to know more.