 Despite the need to build many tunnels and viaducts this work was carried out quickly and the 29 kilometre extension from Genoa to Savona Letimbro was inaugurated on 25 May 1868.In 1865 the line had been absorbed by the newly established Società per le strade ferrate dell'Alta Italia ("Upper Italian Railways").On 25 January 1872, the line was completed to Ventimiglia.