Gezira Light Railway

Sudan has 4,725 kilometers of narrow-gauge, single-track railroads that serve the northern and central portions of the country. The main line runs from Wadi Halfa on the Egyptian border to Khartoum and southwest to Al Ubayyid via Sannar and Kosti, Sudan, with extensions to Nyala in Southern Darfur and Wau in Western Bahr al Ghazal, South Sudan. Other lines connect Atbarah and Sannar with Port Sudan, and Sannar with Ad Damazin. A 1,400-kilometer line serves the al Gezira cotton-growing region. A modest effort to upgrade rail transport is currently underway to reverse decades of neglect and declining efficiency. Service on some lines may be interrupted during the rainy season.

total: 5,063 km
3 ft 6 in (1,067 mm) gauge: 4,347 km
610 mm (2 ft) gauge plantation lines: 716 km
note: the main line linking Khartoum to Port Sudan carries over two-thirds of Sudan's rail traffic

The main system, Sudan Railways, which was operated by the government-owned Sudan Railways Corporation (SRC), provided services to most of the country's production and consumption centers. The other line, the Gezira Light Railway, was owned by the Sudan Gezira Board and served the Gezira Scheme and its Manaqil Extension. Rail dominated commercial transport in the early years but competition from the highways increased rapidly and by 2013, 90% of inland transport in Sudan was by road. The main rail system was reorganised into two companies - the SRC which owned the physical sssets of the Sudan Railways and another company which orgnaised the operations with participation of private companies (10 private companies were reported to be running operations in different lines in 2013).

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Wikipedia