Bridges are considered structurally deficient if significant load-carrying elements are found to be in poor or worse condition due to deterioration and/or damage, or the adequacy of the waterway opening provided by the bridge is determined to be extremely insufficient to the point of causing intolerable traffic interruptions.
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Number of U.S. structurally deficient road bridges 2024
In 2024, the U.S. state home to the most structurally deficient road bridges was Iowa, at 4,544 structurally deficient bridges in total. Pennsylvania was next, with 2,932 such bridges.
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ARTBA. (March 31, 2025). Number of structurally deficient road bridges in the U.S. in 2024, by key state [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/190420/number-of-us-structurally-deficient-road-bridges-2010/
ARTBA. "Number of structurally deficient road bridges in the U.S. in 2024, by key state." Chart. March 31, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/190420/number-of-us-structurally-deficient-road-bridges-2010/
ARTBA. (2025). Number of structurally deficient road bridges in the U.S. in 2024, by key state. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/190420/number-of-us-structurally-deficient-road-bridges-2010/
ARTBA. "Number of Structurally Deficient Road Bridges in The U.S. in 2024, by Key State." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Mar 2025, /statistics/190420/number-of-us-structurally-deficient-road-bridges-2010/
ARTBA, Number of structurally deficient road bridges in the U.S. in 2024, by key state ÌÇÐÄÆƽâ°æ, /statistics/190420/number-of-us-structurally-deficient-road-bridges-2010/ (last visited July 21, 2026)
Number of structurally deficient road bridges in the U.S. in 2024, by key state [Graph], ARTBA, March 31, 2025. [Online]. Available: /statistics/190420/number-of-us-structurally-deficient-road-bridges-2010/
