San Francisco-Oakland Bay Bridge
26%, or one in four, of the nation’s bridges are either structurally deficient or functionally obsolete. While some progress has been made in recent years to reduce the number of deficient and obsolete bridges in rural areas, the number in urban areas is rising. A $17 billion annual investment is needed to substantially improve current bridge conditions. Currently, only $10.5 billion is spent annually on the construction and maintenance of bridges.
2009 US Bridge Infrastructure report card [PDF 9 pp.]
America's Infrastructure [PDF 168 pp.]
U.S. Bridge Tracker - Check the Safety of the Bridges You Cross
h/t: Next Big Future
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