The first Singapore-Kranji railway from Tank Road to Kranji was opened in 1903. In 1909, the Johor State railway was opened and in 1912 both these railways became part of the Federated Malay States railway, which had been formed in 1901. After the completion of the Causeway in 1923, the lines were joined to complete the unification of the Federated Malay States Railway. Previously a Railway ferry service had operated between Woodlands jetty and Abu Bakar pier from 1903 until 1923.