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United States Department of Transportation United States Department of Transportation

Bridge Condition by Age Group: 2015

Years Old (as of 12/31/2015)


Dataset Table:

0-25 26-50 51-75 76-100 >100
Total Bridges 170,125 208,806 147,763 72,898 12,241
Total Deficient Bridges
Number 17,536 36,087 48,406 32,647 8,236
Percent 10.3 17.3 32.8 44.8 67.3
Structurally Deficient
Number 2,062 13,615 20,009 18,146 4,959
Percent 1.2 6.5 13.5 24.9 40.5
Functionally Obsolete
Number 15,474 22,472 28,397 14,501 3,277
Percent 9.1 10.8 19.2 19.9 26.8


Excludes 4 bridges with no recorded age. Bridges with a Year Built or Year Reconstructed within the past 10 years will not be assigned a deficient status. Therefore, when referring to the deficiency being calculated not using the 10-year rule, the status will be calculated without taking into consideration the year built or the year reconstructed. U.S. totals include the 50 states, the District of Columbia, and Puerto Rico. Table includes: Rural–Interstate, principal arterial, minor arterial, major collector, minor collector and local roads; Urban–Interstate, other freeways or expressways, other principal arterial, minor arterial, collector, and local roads.  


U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory. Available at as of May 2016.