The counting methods of "bridges" don't seem to match between the sites. Pennslyvania's average age of a bridge is over 50 years old, where Texas lists only ha

The counting methods of "bridges" don't seem to match between the sites. Pennslyvania's average age of a bridge is over 50 years old, where Texas lists only half of their bridges being over 40 years old. https://www.penndot.gov/ProjectAndPrograms/Bridges/pages/default.aspx https://www.penndot.gov/ProjectAndPrograms/Bridges/pages/def... So Pennslyvania's clearly got a problem, but Pittsburg (and the state on the whole) gets more rain and far more snow and ice, so even if they were the same age, it doesn't really seem comparable.