Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.

Photographer: Mike Wintermantel
Taken: June 5, 2014
Caption: The Three Sisters Bridges Marker
Additional Description: Graphic caption:
This photo from 1859 shows the second bridge at Sixth Street designed by famous engineer John Roebling. It was considered to be the most beautiful of his early cable-suspension bridges. Roebling used this bridge on his company letterhead. Also outstanding was the early Seventh Street Bridge (1884), by Gustav Lindenthal, before he designed the present Smithfield Street Bridge.
Carnegie Library of Pittsburgh
Submitted: June 5, 2014, by Mike Wintermantel of Pittsburgh, Pennsylvania.
Database Locator Identification Number: p275133
File Size: 1.742 Megabytes

To see the metadata that may be embedded in this photo, sign in and then return to this page.