Korro railway station was a ground level stopping place during the passenger transport days of the Willunga railway line. Shortly after the stop, the railway crossed the Onkaparinga River. The old bridge, built in 1914, had 3 spans, each of 70 feet, and was of lattice-type girder construction. A second bridge, built in 1930, also has 3 spans of rivetted plate-girder construction founded on concrete abutment piers driven into the bedrock. Height 17 feet, 3 inches.