17 050 Smithfield St. Bridge

drew.murray
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17 050 Smithfield St. Bridge
17 050 Smithfield St. Bridge

Smithfield Street Bridge, Pittsburgh

from its entry on the American Society of Civil Engineers website (www.asce.org):

"Three rivers - the Allegheny, Monongahela, and Ohio - join in Pittsburgh, making the city a natural site for the building of bridges. But the Smithfield Street Bridge stands apart from other Pittsburgh bridges for several reasons: it replaced structures by two well-known bridge engineers, Lewis Wernwag and John A. Roebling; it was the first use in America of the lenticular - or lens-shaped - truss design; and it was one of the first major bridges in the U.S. built primarily with steel.

The Smithfield Street Bridge also is significant because it was designed by the renowned engineer and bridge designer Gustav Lindenthal, who was only 32 years old when he conceived it. The graceful appearance of the bridge's twin 360-foot spans foreshadowed a new approach to bridge-building – when Lindenthal became commissioner of bridges for the city of New York in 1902, he initiated the formal practice of engineers and architects collaborating on all major bridge projects."

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Taken on: September 22, 2017
Tags: Everybody's photos tagged with Pittsburgh Pittsburgh Everybody's photos tagged with Pennsylvania Pennsylvania Everybody's photos tagged with Western PA Western PA more » Everybody's photos tagged with Smithfield Street Bridge Smithfield Street Bridge Everybody's photos tagged with historic bridge historic bridge Everybody's photos tagged with historic bridges historic bridges Everybody's photos tagged with National Historic Civil Engineering Landmark National Historic Civil Engineering Landmark Everybody's photos tagged with historic landmark historic landmark Everybody's photos tagged with bridge bridge Everybody's photos tagged with bridges bridges Everybody's photos tagged with lenticular truss bridge lenticular truss bridge Everybody's photos tagged with truss bridge truss bridge « less
Sets appears in:   • Pittsburgh ~ 2017, 2020 ~ 50 photos   
Camera: NIKON COOLPIX P600, f/3.8, 1/500 sec, 7.2mm, ISO 100 (more info) (hide info)
Camera: NIKON COOLPIX P600
Aperture: f/3.8
Exposure Time: 0.002 sec (1/500)
Focal Length: 7.2mm
ISO: 100
Exposure Bias: 0 EV
Flash: Off, Did not fire
Exposure Program: Program AE
Metering Mode: Multi-segment
White Balance: Auto
Color Space: Uncalibrated
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Stats: 55 views