Viaduct, 1971 ID: 674 | This file appears in: Superior Viaduct A largely intact part of the Superior Viaduct - with the streetcar tracks still in place - in 1971. | Source: Cleveland State University, Michael Schwartz Library, Special Collections Download Original File SourceCleveland State University, Michael Schwartz Library, Special Collections "Viaduct, 1971" appears in: Superior Viaduct