The Mark Clark Bridge is a girder bridge that carried a State Route 532 across the Stillaguamish River between Stanwood, ishington , and Camano Island . It is the only form of road access to Camano Island from 1950 until 2010, when it is demolished. The bridge is named for Mark W. Clark , a decorated Army officer who spent time on Camano Island. The water surrounding Camano Island is too shallow for ferry service, which made this bridge a critical link for island residents and visitors.
6-410: The bridge replaced an earlier swing bridge that opened in 1909 and is part of the first highway between Stanwood and Camano Island. Shortly after the highway is incorporated into the state highway system in 1945, a $ 615,000 replacement is planned by the state government at the request of Stanwood, Camano Island, and the former town of East Stanwood . It is dedicated on July 23, 1950, and is connected to
12-452: A new highway bypassing Stanwood and East Stanwood. The Washington State Department of Transportation (WSDOT) began construction of a new Stillaguamish River bridge in the summer of 2009. The Mark Clark Bridge is found to be too narrow and vulnerable in the event of a major earthquake. The new bridge is designed with a width of 56 feet (17 m) to accommodate a four-lane highway, while initially configured for two-lane traffic, and include
18-407: A vertical axis. It has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right. In its closed position, a swing bridge carrying a road or railway over a river or canal , for example, allows traffic to cross. When
24-417: A water vessel needs to pass the bridge, road traffic is stopped (usually by traffic signals and barriers), and then motors rotate the bridge horizontally about its pivot point. The typical swing bridge will rotate approximately 90 degrees, or one-quarter turn; however, a bridge which intersects the navigation channel at an oblique angle may be built to rotate only 45 degrees, or one-eighth turn, in order to clear
30-515: A wide shoulder for bicyclists and pedestrians. On August 17, 2010, the new Camano Gateway Bridge opened to traffic. As a result, the Mark Clark bridge is closed to traffic and later demolished. This article about a bridge in the U.S. state of Washington is a stub . You can help Misplaced Pages by expanding it . Swing bridge A swing bridge (or swing span bridge ) is a movable bridge that can be rotated horizontally around
36-473: The channel. Small swing bridges as found over narrow canals may be pivoted only at one end, opening as would a gate, but require substantial underground structure to support the pivot. Many inner cities have swing bridges, since these require less street space than other types of bridges. (A "swing bridge" in New Zealand refers to a flexible walking track bridge which "swings" as you walk across.) In
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