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Eads Bridge

Eads Bridge
Eads Bridge from Laclede's Landing, Sep 2012.jpg
The Eads Bridge from St. Louis, stretching over the Mississippi River toward Illinois
Coordinates 38°37′41″N 90°10′17″W / 38.62806°N 90.17139°W / 38.62806; -90.17139
Carries 4 highway lanes
2 MetroLink tracks
Crosses Mississippi River
Locale St. Louis, Missouri and East St. Louis, Illinois
Other name(s) World's First All Steel Bridge
Characteristics
Design Arch bridge
Total length 6,442 ft (1,964 m)
Width 46 ft (14 m)
Longest span 520 ft (158 m)
Clearance below 88 ft (27 m)
History
Designer James B. Eads
Construction begin 1867; 150 years ago (1867)
Opened 1874; 143 years ago (1874)
Statistics
Daily traffic

8,100 (2014)

Eads Bridge
Eads Bridge is located in Missouri
Eads Bridge
Eads Bridge is located in the US
Eads Bridge
Location St. Louis, Missouri
Coordinates 38°37′41″N 90°10′17″W / 38.62806°N 90.17139°W / 38.62806; -90.17139Coordinates: 38°37′41″N 90°10′17″W / 38.62806°N 90.17139°W / 38.62806; -90.17139
Built 1867-1874
Architect Eads,Capt. James B.
Architectural style Other
NRHP Reference # 66000946
Significant dates
Added to NRHP October 15, 1966
Designated NHL January 29, 1964

8,100 (2014)

Eads Bridge is a steel technology combined road and railway bridge over the Mississippi River at St. Louis, connecting St. Louis and East St. Louis, Illinois. Opened in 1874, it was one of the earliest long bridges built across the Mississippi, the world' first all steel construction, and built high enough so steamboats could travel under. As such, the St. Louis Landmark is listed on the National Register of Historic Places, as a National Historic Landmark. As of April 2014, it carries about 8,100 vehicles daily, down 3,000 since the new Stan Musial Veterans Memorial Bridge opened in February 2014.

The bridge is named for its designer and builder, James B. Eads. When completed in 1874, the Eads Bridge was the longest arch bridge in the world, with an overall length of 6,442 feet (1,964 m). The ribbed steel arch spans were considered daring, as was the use of steel as a primary structural material: it was the first such use of true steel in a major bridge project. The cost of building the bridge was nearly $10 million.

The Eads Bridge was also the first bridge to be built using cantilever support methods exclusively, and one of the first to make use of pneumatic caissons. The Eads Bridge caissons, still among the deepest ever sunk, were responsible for one of the first major outbreaks of "caisson disease" (also known as "the bends" or decompression sickness). Fifteen workers died, two other workers were permanently disabled, and 77 were severely afflicted.

On June 14, 1874, John Robinson led a "test elephant" on a stroll across the new Eads Bridge to prove it was safe. A big crowd cheered as the elephant from a traveling circus lumbered towards Illinois. It was believed that elephants had instincts that would keep them from setting foot on unsafe structures. Two weeks later, Eads sent 14 locomotives back and forth across the bridge at one time. The opening day celebration on July 4, 1874, featured a parade that stretched 15 miles (24 km) through the streets of St. Louis.


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