As of March 31, 2023, around 0.2 percent of road bridges aged 51 years or older in Japan were in a critical condition that required immediate action to restore structural integrity. Bridges of this building age accounted for 23 percent of roughly 723 thousand inspected bridges.
Distribution of inspection results of road bridge conditions in Japan as of March 2023, by building age
not including facilities under inspection as of March 31, 2023; classification after close visual inspection into stages*
Supplementary notes
*Stage I: Good. No structural deficiency. Stage II: Preventive maintenance. Preventive maintenance is desirable, although no structural deficiency is found. Stage III: Early rehabilitation. The structure needs early rehabilitation, or it can become deficient. Stage IV: Emergency rehabilitation. The structure needs emergency rehabilitation because it is deficient or it will most likely become deficient.
Percentages may not total 100 due to rounding by the source.
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MLIT (Japan). (August 23, 2023). Distribution of inspection results of road bridge conditions in Japan as of March 2023, by building age [Graph]. In Statista. Retrieved December 22, 2024, from https://www.statista.com/statistics/1231285/japan-share-road-bridge-conditions-by-age/
MLIT (Japan). "Distribution of inspection results of road bridge conditions in Japan as of March 2023, by building age." Chart. August 23, 2023. Statista. Accessed December 22, 2024. https://www.statista.com/statistics/1231285/japan-share-road-bridge-conditions-by-age/
MLIT (Japan). (2023). Distribution of inspection results of road bridge conditions in Japan as of March 2023, by building age. Statista. Statista Inc.. Accessed: December 22, 2024. https://www.statista.com/statistics/1231285/japan-share-road-bridge-conditions-by-age/
MLIT (Japan). "Distribution of Inspection Results of Road Bridge Conditions in Japan as of March 2023, by Building Age." Statista, Statista Inc., 23 Aug 2023, https://www.statista.com/statistics/1231285/japan-share-road-bridge-conditions-by-age/
MLIT (Japan), Distribution of inspection results of road bridge conditions in Japan as of March 2023, by building age Statista, https://www.statista.com/statistics/1231285/japan-share-road-bridge-conditions-by-age/ (last visited December 22, 2024)
Distribution of inspection results of road bridge conditions in Japan as of March 2023, by building age [Graph], MLIT (Japan), August 23, 2023. [Online]. Available: https://www.statista.com/statistics/1231285/japan-share-road-bridge-conditions-by-age/
