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Tuesday, February 11, 2014

From the Eads Bridge to the Stan Span: 140 Years of St. Louis Bridges

Posted By on Tue, Feb 11, 2014 at 7:00 AM

The Stan Musial Veterans Bridge opened last weekend. - PHOTOS BY CHRIS NAFFZINGER
  • Photos by Chris Naffzinger
  • The Stan Musial Veterans Bridge opened last weekend.

The opening of the Stan Musial Veterans Bridge in downtown St. Louis marks an important milestone in the history of the mighty bridges that cross the Mississippi River in St. Louis. Almost a half century has passed since the last bridge, the Poplar Street Bridge, opened in 1967. But the history of the river bridges in St. Louis goes back 140 years, reflecting the changing fortunes and needs of the metropolitan area.

The story starts with the Eads Bridge.

The Eads Bridge was St. Louis' magnificent -- if belated -- response to the Chicago railroad bridge built in 1856 across the Mississippi River between Davenport, Iowa, and Rock Island, Illinois. St. Louis leaders frantically sought to catch up to its northern rival. Powerful riverboat and ferry interests had blocked building a railroad bridge to St. Louis for decades. When they finally agreed to a new bridge to compete with Chicago, the conditions seemed impossible: The new bridge could not block the river while under construction, and it required enough clearance for steamboats to safely pass under the bridge even during high water.

The Eads Bridge
  • The Eads Bridge

James B. Eads, who had made a fortune salvaging goods from steamboat wrecks and building ironclads in Carondelet for the Union during the Civil War, stepped up to the challenge. The Mississippi River was a formidable foe: Strong currents and mud dozens of feet thick provided treacherous conditions to build even just the two stone piers that would support the three steel arches of the bridge's main span.

Eads used caissons, a new technology developed in Europe to solve the problem of reaching bedrock through the thick, muddy silt of the river, but it was a deadly method. Compressed air pumped into two chambers under the stone bridge piers in the middle of the river provided work space where "sandhogs" excavated the mud from the river bottom. It was hellishly hot, hard work, but the greatest threat waited for workers who came out of the compressed air chambers too quickly. The "bends," named after its victims' reaction to nitrogen bubbles forming in their veins when they reached the surface's uncompressed air too quickly, claimed many casualties.

The Eads Bridge under construction - CREDIT: WIKIMEDIA COMMONS
  • Credit: Wikimedia Commons
  • The Eads Bridge under construction

The next challenge came with the construction of three steel and iron arches that span the river. Blocking the river was out of the question, so Eads used cantilevered supports that allowed for the construction of the arches high above the river without the need for scaffolding. When the bridge opened on July 4, 1874, the entire city came out to see the grand opening. According to legend, an elephant was the first to cross the bridge, owing to the false belief that the pachyderms could detect an unsafe bridge by instinct.

Continue on to see the legacy of the Eads Bridge

The MacArthur Bridge
  • The MacArthur Bridge

The Eads Bridge remains an engineering marvel, and its design provided inspiration for countless bridges throughout the world. In St. Louis, the bridge paved the way for more bridges that quickly rose up and down the river, inspired by its three-arch design. The Merchants (1890), McKinley (1910) and MacArthur (1910-17) bridges expanded St. Louis' burgeoning rail connections. These bridges switched to a steel-truss system with massive, hulking superstructures that convey the sense of optimism and boldness of that era's railroad magnates.

The Chain of Rocks Bridge
  • The Chain of Rocks Bridge

The Chain of Rocks (1927) and Veterans (1951, now the Martin Luther King) bridges harkened a new era in bridge building in St. Louis. While the earlier railroad bridges provided limited vehicular access, the new bridges served only the automobile, which was rapidly replacing the railroad as America's preferred method of interstate travel. The arrival of the Poplar Street Bridge in 1967 further cemented the primacy of the automobile by providing interstate access across its spare, modernist design that is truly aesthetically inferior to the Eads Bridge to the north.

The Poplar Street Bridge
  • The Poplar Street Bridge

The new Stan Musial Veterans Bridge, which opened on Sunday, is a fitting bookend to the 140 years of bridge building in St. Louis. The "Stan Span" represents a new era in engineering, and while its design is not as revolutionary as the Eads Bridge was, it still secures a first: The bridge has no piers blocking river traffic in the main channel. As thousands of people witnessed at its opening last Saturday, the bridge also provides a breathtaking design that would have probably even impressed James Eads. Me? I'm still waiting for an elephant's opinion.

The Stan Musial Veterans Bridge
  • The Stan Musial Veterans Bridge
Looking straight up at the Missouri tower of the Stan Span
  • Looking straight up at the Missouri tower of the Stan Span
Crowds on the bridge the Saturday before opening to auto traffic
  • Crowds on the bridge the Saturday before opening to auto traffic

Chris Naffziger writes about architecture at St. Louis Patina. Contact him via e-mail at

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