https://americanfactbook.org/bridges 2026-11-05 weekly 0.8 https://americanfactbook.org/bridges/methodology 2026-11-05 monthly 0.4 https://americanfactbook.org/bridges/analysis/bridges-poor-share-by-state-and-owner 2026-11-10 yearly 0.7 https://americanfactbook.org/bridges/rankings/states-by-poor-share 2026-11-05 weekly 0.7 https://americanfactbook.org/bridges/which-state-has-the-largest-share-of-bridges-rated-poor 2026-11-05 weekly 0.7 https://americanfactbook.org/bridges/which-owner-type-maintains-the-most-bridges 2026-11-05 weekly 0.7