Video shows a semi wreck along Interstate 64 that snarled traffic and downed a sign on a busy exit headed into Richmond on Friday morning. A tractor-trailer hauling rocks drove into the interstate's median just before the Bryan Park interchange and hit an overhead sign just after 8:05 a.m., according to state police. VDOT officials said the crash closed I-64's right lane and shoulder at mile marker 186. That is near the exit for Staples Mill Road as well as the exit for Laburnum Avenue and I-195