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Condition of Rail Transit Infrastructure
Percents may not add to 100 due to rounding.
KEY: N = data do not exist; R = revised.
U.S. Department of Transportation, Federal Transit Administration, Status of the Nation's Highways, Bridges and Transit: Conditions and Performance (Washington, DC: Biennial Issues), tables 3-35 and 3-36, available at http://www.fhwa.dot.gov/pubstats.html as of June 25, 2010.