7th Street Trafficway Bridge, Truss bridge in Kansas City, United States
The 7th Street Trafficway Bridge spans across the Kansas River as a metal truss structure built in the early 20th century with cantilever design. The construction carries four lanes of traffic, with the original structure now dedicated to northbound vehicles while a companion bridge handles southbound traffic.
The structure was completed in 1932 and created an essential connection between the Armourdale and Argentine neighborhoods of Kansas City. A companion bridge was built decades later in the 1970s to handle increased traffic demands on this important route.
The structure carries the official name Herman G. Dillon Bridge and shows engineering methods from the early 20th century through its metal truss design and construction techniques. Visitors can observe the quality of the steelwork that is typical for buildings of that era.
The bridge is designed for vehicles with multiple lanes and connects two important neighborhoods. Visitors should know that the original structure now carries traffic in only one direction, with adjacent structures handling traffic in the opposite direction.
The bridge preserves a special construction feature: original hinge pins supporting the central span that date from the original design. This engineering solution shows how designers of that era combined flexibility and durability.
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