Society of civil engineers gives U.S. low grades for transportation infrastructure . Air travel and overhaul is long overdue , while unemployment increased by 7 % last year . But comparatively little has been invested in expanding U.S. railroad capacity . Half of all Americans have no access to public transportation or trains . The longer these problems go unaddressed , the worse they grow .
Society of civil engineers gives U.S. low grades for transportation infrastructure . Air travel and overhaul is long overdue , while unemployment increased by 7 % last year . Half of all Americans have no access to public transportation or trains . The longer these problems go unaddressed , the worse they grow .