A single-vehicle crash involving a commercial vehicle occurred at approximately 3:37 p.m. Saturday, Aug. 6, and has caused a lane closure. A commercial vehicle left the roadway, crashed and became engulfed in flames. As a result, the northbound left lane of Interstate 59 near 216 mile marker, in Dekalb County has been closed. Troopers with the Alabama Law Enforcement Agency’s (ALEA) Highway Patrol Division are on scene investigating and will continue to monitor the situation and provide updates accordingly.