Road-rail bridge
Road–rail bridges are bridges shared by road and rail lines. Road and rail may be segregated so that trains may operate at the same time as cars (e.g., the Sydney Harbour Bridge). The rail track can be above the roadway or vice versa with truss bridges. Road and rail may share the same carriageway so that road traffic must stop when the trains operate (like a level crossing), or operate together like a tram in a street (street running).
Road–rail bridges are sometimes called combined bridges.
Türr István híd over the Danube near Baja
Whanganui River near Taumarunui. Replaced by new road bridge up-stream from combined rail road bridge in 1960s.
The Bernina railway shares a bridge over the River Poschiavino at Campocologno just north of the Swiss-Italian border.
During wartime and other emergencies, rail tracks on bridges are sometimes paved to allow road traffic to proceed. Examples include the Ludendorff Bridge at Remagen bridge.
After a landslide on the Stromeferry road in 2012, a 150m section of the parallel railway was paved with rubber tiles to allow road traffic to avoid a 250 km detour.
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