The Sind–Pishin State Railway (reporting mark SPR) was the name of a broad gauge line that ran between Rohri, Sindh and Chaman, Balochistan. In 1886, the southern section of the Sind–Pishin State Railway was amalgamated with the Kandahar State Railway and several other railways to form the North Western State Railway (NWR). Today the line is still active and part of the Rohri–Chaman Railway Line.
Rail transport in Pakistan began in 1855 during the British Raj, when several railway companies began laying track and operating in present-day Pakistan. The country's rail system has been nationalised as Pakistan Railways (originally the Pakistan Western Railway). The system was originally a patchwork of local rail lines operated by small private companies, including the Scinde, Punjab and Delhi Railways and the Indus Steam Flotilla. In 1870, the four companies were amalgamated as the Scinde, Punjab & Delhi Railway. Several other rail lines were built shortly thereafter, including the Sind–Sagar and Trans–Baluchistan Railways and the Sind–Pishin, Indus Valley, Punjab Northern and Kandahar State Railways. These six companies and the Scinde, Punjab & Delhi Railway merged to form the North Western State Railway in 1886. It was later renamed as North-Western Railway in 1905, and few decades following the independence of Pakistan in 1947, the North Western Railway which mostly became part of Pakistani territory was renamed Pakistan Western Railway in 1961. It was later renamed as Pakistan Railways in 1974.
The Sibi-Zardalu Branch Line, previously known as Kandahar State Railway opened in 1881, originally ran from Sibi and then on wards to Rindli, with the intention to reaching Quetta and onwards to Kandahar. However, the line never reached Kandahar. The Kandahar State Railway had its headquarters at Sibi, Balochistan. The Kandahar State Railway joined with the southern section of the Sind–Pishin State Railway and in 1886 amalgamated, with other railways, to form North Western State Railway (NWSR). The total length of this line is 140 kilometers with 10 railway stations. The railway line was closed in 2006 after a terrorist attack. Rehabilitation work started in 2016, and after several delays the railway line became partially-operational in 2023 up to Harnai.
The North Western State Railway (NWSR) was formed in January 1886 from the merger of the Scinde, Punjab & Delhi Railway, the Indus Valley State Railway, the Punjab Northern State Railway, the eastern section of the Sind–Sagar Railway and the southern section of the Sind–Pishin State Railway and the Kandahar State Railway.