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The Gibraltar Road–Waterway Canal Bridge is a bridge located on Gibraltar Road over the Waterway Canal in
The Gibraltar Road Bridge is a reinforced-concrete cantilevered-arch bridge measuring long and wide, with a span length of and a roadway width of . A concrete balustrade with urn-shaped spindles flanks the roadway.
The bridge itself is of a rare
Middle Gibraltar Road Bridge
from HistoricBridges.org: Multiple photographs of the bridge {{DEFAULTSORT:Gibraltar Road-Waterway Canal Bridge Road bridges on the National Register of Historic Places in Michigan Bridges completed in 1932 Bridges in Wayne County, Michigan National Register of Historic Places in Wayne County, Michigan Concrete bridges in the United States Arch bridges in the United States Cantilever bridges in the United States
Gibraltar, Michigan
Gibraltar is a city in Wayne County in the U.S. state of Michigan. The population was 4,656 at the 2010 census.
Gibraltar is a southern city of Metro Detroit and is about south of the city of Detroit. The city is bordered by the Detroit River ...
. It was listed on the National Register of Historic Places
The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic ...
in 2000.
History
The Wayne County Road Commission paved a section of Gibraltar Road in the early 1930s, and constructed a number of new bridges, including this one, during the project.Description
The Gibraltar Road Bridge is a reinforced-concrete cantilevered-arch bridge measuring long and wide, with a span length of and a roadway width of . A concrete balustrade with urn-shaped spindles flanks the roadway.
The bridge itself is of a rare cantilevered
A cantilever is a rigid structural element that extends horizontally and is supported at only one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cant ...
concrete arch design. The traditional arch bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct ...
design requires a complete arch; in contrast, the cantilevered arch design is divided into two structurally independent half-arches which are each cantilevered from one side. A slab is suspended between the two cantilevered sections; in the Gibraltar Road Bridge, this section is 9 feet long. Close inspection of side walls of the bridge reveals two seams marking the end of the cantilevered arms.
After construction, the Wayne County Road Commissioners noted that "this low sweeping arch bridge is in keeping with its surroundings and is one of the features which make Gibraltar Road so attractive."
See also
* *References
External links
Middle Gibraltar Road Bridge
from HistoricBridges.org: Multiple photographs of the bridge {{DEFAULTSORT:Gibraltar Road-Waterway Canal Bridge Road bridges on the National Register of Historic Places in Michigan Bridges completed in 1932 Bridges in Wayne County, Michigan National Register of Historic Places in Wayne County, Michigan Concrete bridges in the United States Arch bridges in the United States Cantilever bridges in the United States