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19-710: The Congressman William L. Clay Sr. Bridge , formerly known as the Bernard F. Dickmann Bridge and popularly as the Poplar Street Bridge or PSB , completed in 1967, is a 647-foot-long (197 m) deck girder bridge across the Mississippi River between St. Louis, Missouri , and East St. Louis, Illinois . The bridge arrives on the Missouri shore line just south of the Gateway Arch . Planned just before construction of

38-466: A combination of both. The concrete elements may be reinforced or prestressed . Such modern bridges include girder , plate girder , and box girder bridges, all types of beam bridges. Types of construction could include having many beams side by side with a deck across the top of them, to a main beam either side supporting a deck between them. The main beams could be I-beams , trusses , or box girders . They could be half-through , or braced across

57-526: A direct connection to I-44 westbound. Such access requires using I-55/I-64 across the Poplar Street Bridge, Westbound I-70 traffic must follow I-55/I-64 before Exit 3 on the Illinois side of the river to connect to I-44 westbound on the Missouri side, while eastbound I-44 traffic must exit onto I-55/I-64 on the Missouri side to connect to I-70 eastbound the Illinois side. The east end of the bridge crosses

76-423: Is everything from the bearing pads, up - it is what supports the loads and is the most visible part of the bridge. The substructure is the foundation which transfers loads from the superstructure to the ground. Both must work together to create a strong, long-lasting bridge. The superstructure consists of several parts: The substructure is made of multiple parts as well: Beam bridge Beam bridges are

95-408: Is no longer a true girder bridge. Girder bridges have existed for millennia in a variety of forms depending on resources available. The oldest types of bridges are the beam , arch and swing bridges, and they are still built today. These types of bridges have been built by human beings since ancient times, with the initial design being much simpler than what we utilize today. As technology advanced

114-461: Is opposed to viaducts using continuous spans over the piers. Beam bridges are often only used for relatively short distances because, unlike truss bridges, they have no built in supports. The only supports are provided by piers. The farther apart its supports, the weaker a beam bridge gets. As a result, beam bridges rarely span more than 250 feet (80 m). This does not mean that beam bridges are not used to cross great distances; it only means that

133-462: Is typically used to refer to a steel beam. In a beam or girder bridge, the beams themselves are the primary support for the deck, and are responsible for transferring the load down to the foundation. Material type, shape, and weight all affect how much weight a beam can hold. Due to the properties of the second moment of area , the height of a girder is the most significant factor to affect its load capacity. Longer spans, more traffic, or wider spacing of

152-685: The Interstate Highway System , the other being that of I-39 , I-90 , and I-94 in Wisconsin between Portage and Madison . The old alignment of I-70 through downtown to the west approach for the Stan Musial Veterans Memorial Bridge became an extension of I-44 . However, motorists traveling eastbound on I-44 must continue westbound on I-70 and do not have a direct connection to the Stan Musial Veterans Memorial Bridge, while motorists traveling westbound on I-70 do not have

171-647: The Arch, the builders in 1959 were to request that 25 acres (10 ha) of the Gateway Arch property be turned over from the National Park Service for the bridge. The request generated enormous controversy and ultimately 2.5 acres (1.0 ha) of the Jefferson Expansion National Memorial (which included all of the original platted area of St. Louis when it was acquired in the 1930s and 1940s)

190-404: The beams will all directly result in a deeper beam. In truss and arch -style bridges, the girders are still the main support for the deck, but the load is transferred through the truss or arch to the foundation. These designs allow bridges to span larger distances without requiring the depth of the beam to increase beyond what is practical. However, with the inclusion of a truss or arch the bridge

209-815: The bridge sits over Poplar Street, and the media started referring to it by that name long before the bridge opened due to the fact that the bridge was built over Poplar Street. It was officially renamed as the Congressman William L. Clay Sr. Bridge in October 2013 in honor of Bill Clay . Girder bridge The term "girder" is often used interchangeably with "beam" in reference to bridge design. However, some authors define beam bridges slightly differently from girder bridges. A girder may be made of concrete or steel. Many shorter bridges, especially in rural areas where they may be exposed to water overtopping and corrosion, utilize concrete box girder. The term "girder"

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228-401: The methods were improved and were based on the utilization and manipulation of rock, stone, mortar and other materials that would serve to be stronger and longer. In ancient Rome , the techniques for building bridges included the driving of wooden poles to serve as the bridge columns and then filling the column space with various construction materials. The bridges constructed by Romans were at

247-465: The new bridge opened, congestion alleviated by almost 14%, less than the predicted 20% decline with 106,500 vehicles using it every day because total traffic across the river from all bridges increased by 7.4% over 2013 levels. I-55 , I-64 and U.S. Route 40 (US 40) cross the Mississippi on the Poplar Street Bridge. US 66 also ran concurrently over this bridge until 1979, and US 50

266-470: The simplest structural forms for bridge spans supported by an abutment or pier at each end. No moments are transferred throughout the support, hence their structural type is known as simply supported . The simplest beam bridge could be a log (see log bridge ), a wood plank , or a stone slab (see clapper bridge ) laid across a stream. Bridges designed for modern infrastructure will usually be constructed of steel or reinforced concrete , or

285-466: The south end of what was Bloody Island which Robert E. Lee connected to the mainland of Illinois with landfill in the 1850s. During its island days several Missouri politicians fought duels there. What was Bloody Island is now a train yard. Although the bridge's former name honors former St. Louis mayor Bernard F. Dickmann , it is most commonly referred to as the Poplar Street Bridge, with many locals unaware of its official name. The Missouri end of

304-487: The time basic but very dependable and strong while serving a very important purpose in social life. As the Industrial Revolution came and went, new materials with improved physical properties were utilized; and wrought iron was replaced with steel due to steel's greater strength and larger application potential. All bridges consist of two main parts: the substructure, and the superstructure. The superstructure

323-566: The top to create a through bridge . Because no moments are transferred, thrust (as from an arch bridge ) cannot be accommodated, leading to innovative designs, such as lenticular trusses and bow string arches , which contain the horizontal forces within the superstructure . Beam bridges are not limited to a single span . Some viaducts such as the Feiyunjiang Bridge in China have multiple simply supported spans supported by piers. This

342-565: Was given to the bridge. Two Interstates and a U.S. Highway cross the entire bridge. Approximately 100,000 vehicles cross the bridge daily, making it the second most heavily used bridge on the river, after the I-94 Dartmouth Bridge in Minneapolis, Minnesota. The traffic was heavily congested until the opening of the new Stan Musial Veterans Memorial Bridge in early February 2014. In 2012, 123,564 vehicles used it every day, but after

361-604: Was routed over it before the Interstates were constructed. In addition, I-70 crossed the river here until 2014, when it was realigned to cross the river on the Stan Musial Veterans Memorial Bridge when it was completed. With both I-55 and I-64 routed alongside I-70 prior to its rerouting onto the new bridge, the Popular Street Bridge was the site of just (then) two three-route concurrencies within

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