The invention relates to the technical field of public transportation and provides an urban overhead road-cross wide bus system. The urban overhead road-cross wide bus system comprises a bus, bent frame columns, a track beam unit and passenger get-on and get-off platform units, wherein the track beam unit comprises two track beams arranged in parallel, the track beams are laid in the extending direction of a road, and steel rails are laid on the track beams; the bent frame columns used for supporting the track beams are arranged between the track beams and the parts, on the two sides of the road, of the ground; the passenger get-on and get-off platform units are arranged beside the track beams and are close to the track beams; wheels of the bus are matched with the steel rails, and the width of the bus is matched with that of the track beams. The urban overhead road-cross wide bus system can solve the jam problem of the bus, improve the passing efficiency of the bus and also improve the passing efficiency of common motor vehicle on the road.