Vicksburg Police Patrolman Ryan Williamson, left, investigates after an 18-wheeler turned over at U.S. 61 North and North Washington Street Tuesday afternoon. Jeff Stirgus Jr., 55, 2017 Ptolemy St., New Orleans, right, was northbound on North Washington Street turning southbound on U.S. 61 North at 2 p.m. when the 49,000-pound load of lumber shifted in the back of his truck and caused it to flip, Williamson said. Stirgus was not injured and traffic was not stopped by the accident.