External Links
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- Historic American Engineering Record (HAER) No. PA-2, "Smithfield Street Bridge"
- Smithfield Street Bridge on pghbridges.com
- American Society of Civil Engineers on Smithfield Street Bridge
- Historical photos of the bridge from the Carnegie Library of Pittsburgh
- A collection of contemporary photos of the bridge
- Smithfield Street Bridge (1846) at Structurae
- Smithfield Street Bridge (1883) at Structurae
Read more about this topic: Smithfield Street Bridge
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