A girder bridge is a bridge that uses girders as the means of supporting its deck . The two most common types of modern steel girder bridges are plate and box.
9-632: The Chief Mistawasis Bridge (known as the North Commuter Parkway Bridge prior to June 2018) is a girder bridge in Saskatoon, Saskatchewan , Canada. The bridge officially opened on Oct. 2, 2018, and extends McOrmond Drive across the South Saskatchewan River to connect to Marquis Drive, providing a commuter bypass connecting communities on Saskatoon's northeast and eastern sides more directly to industrial and business development on
18-408: 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
27-462: 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
36-404: 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
45-425: The city's north. Construction of this bridge, located in the northern portion of the city, was financed in concert with construction of replacement for the 1907 Traffic Bridge in the downtown core, which was closed in 2010; that project was opened to traffic on October 3, 2018. In July 2016 officials announced that, when the bridge was complete, it would be given a name tied to Canada's indigenous peoples. The bridge
54-401: 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
63-487: 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
72-558: The water near the bridge extra hazardous. With its bridge-deck 21.6 metres (71 ft) above the river, it is Saskatoon's second highest bridge. 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"
81-545: Was officially named the Chief Mistawasis Bridge, in honour of Mistawasis , the head of the Prairie Tribe and signer of Treaty 6 in 1876, at a ceremony on June 21, 2018. In March of 2017 CBC News described how a berm constructed in the river bed, to channel water around where the bridge's piers were being built was providing an opportunity for urban surfers. Officials warned thrill-seekers that construction made
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