Also, it probably would have been a lot cheaper to have someone roto-rooter all the drains of all the bridges in Pittsburg once a year than to clean up one coll

Also, it probably would have been a lot cheaper to have someone roto-rooter all the drains of all the bridges in Pittsburg once a year than to clean up one collapsed bridge and rebuild it on short notice. I suspect they have other bridges with similar water damage and have to pay to fix those too.