KiwiRail bridges on the rail network, represented as a single polyline for each bridge, which aligns with the track centreline (MainLeft/UpMain only) from the start point to end point of the bridge asset. Includes all bridges supporting a track asset, which may be over rivers, streams, roads or other infrastructure. Bridges are identified with a combination of bridge number and line name. Attribute information includes Lat and Lon coordinates (decimal degrees) for the midpoint of each polyline.Data does not include road bridges over rail track, culverts, footbridges, subways or stock underpasses/overpasses. Existence of a bridge in this data does not necessarily indicate a KiwiRail owned asset. Supplied as ESRI shapefile (polyline) in NZTM, spatial accuracy +/- 0.5m