Here's what we know: A routine inspection turned up the crack An inspector found the crack in the early afternoon – about 2 p.m. Tuesday on the bottom of a bridge truss, on what is described as a support beam. A timetable on the fix is unclear Fixing the bridge could take up to a week, though a timetable was not known as of Tuesday. It at least will be closed through Wednesday morning, according to IDrive Arkansas. Drones were being used to help assess the damage in an effort to keep people and equipment off it. Where will traffic go?