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The Three Sisters Bridges Marker
Photographer: Mike Wintermantel
Taken: June 5, 2014
Caption: The Three Sisters Bridges Marker
Additional Description: Left photo:
The existing Sixth Street Bridge replaced Roebling's bridge. Note the partially completed Seventh Street Bridge, built on the site of Lindenthal's bridge.
American Bridge Company

Right photo:
Huge eyebar chains, connected with pins, hold up the deck built on the massive girders.
Carnegie Library of Pittsburgh
Submitted: June 5, 2014, by Mike Wintermantel of Pittsburgh, Pennsylvania.
Database Locator Identification Number: p275134
File Size: 1.805 Megabytes

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