BLUE SPRINGS, Mo. — One person is seriously injured after a single-car accident this morning in Jackson County. Sean Lamb, 24, of Blue Springs was transported by ambulance  to Centerpoint Hospital after the wreck, during which his vehicle went off the left side of the roadway traveling westbound on I-70 near the Lewis and Clark Viaduct. Lamb was able to regain the highway before traveling off the right side of the road, where his vehicle struck a MoDOT sign and overturned. Lamb was not wearing a seat belt at the time of the accident.