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List of Washington state bridge failures : ウィキペディア英語版 | List of Washington state bridge failures Washington is a state with many bodies of water to cross, including Puget Sound, Hood Canal, the Columbia River and numerous smaller rivers and creeks. It has experienced a number of bridge failures before and after the well known Tacoma Narrows Bridge collapse in 1940. ==Causes== The single greatest cause of failure in Washington has been flooding, frequently associated with severe storms, which then results in destructive bridge scour. According to University of Washington meteorologist Cliff Mass, Western Washington is "particularly vulnerable to such bridge losses, with long floating bridges and the powerful winds associated with our terrain and incoming Pacific cyclones."
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