One person is in serious condition following a crash in Grafton. It happened around 8:57 p.m. near Green Bay Rd. and Hickory St in the town of Grafton. According to the fire department, firefighters found one vehicle off the roadway with heavy damage. Two citizen were rendering aid to a semi-conscious patient. The vehicle had a single occupant who was transported to Froedtert by Grafton paramedics for treatment of serious injuries.