Road-rail bridges are bridges shared by road transport and rail transport (road-rail). They are sometimes called combined bridges. The road and rail on these bridges are often on the same level, but segregated, so that rail vehicles could operate at the same time as road vehicles (e.g., Sydney Harbour Bridge). The roadway can also be above the rail tracks, or vice versa (e.g., Øresund Bridge. Argentina• • • •. •,, carried further two rail tracks as tram tracks from 1932 until 1958.•, carries in central reservation. • • • •.