Kenya Standard Gauge Railway

The Kenya Standard Gauge Railway (SGR) is a partially finished railway system connecting Kenya's cities. Once completed, it will link the country to the neighboring country of Uganda, and through Uganda, to South Sudan, the Democratic Republic of the Congo, Rwanda, and Burundi. There are also plans to link to Addis Ababa, in neighboring Ethiopia to the north. The first segment, between Mombasa and Nairobi, opened passenger rail service in June 2017, and freight rail service in January 2018. Other segments are under construction or planned. The new standard gauge railway, is intended to replace the old, inefficient metre-gauge railway system.

Location
The railway system consists of several major sections:
 * Mombasa–Nairobi Section

This section, measuring 609 km, is known as the Mombasa–Nairobi Standard Gauge Railway, and connects the port city of Mombasa and Nairobi, the capital and largest city of Kenya. Passenger rail services between Mombasa and Nairobi started on 1 June 2017, and freight rail services on 1 January 2018.

It was built between October 2016 and January 2018, by China Road and Bridge Corporation, at a cost of US$3.6 billion, 90 per cent of which was borrowed from the Exim Bank of China, with the Kenyan government providing the remaining 10 per cent.


 * Nairobi–Naivasha Section

This section was also contracted to the company that constructed the Mombasa–Nairobi Section. The line stretches from Nairobi to Naivasha, a distance of about 120 km, at cost of KSh. 150 billion (US$1.5 billion), borrowed from the China Export-Import Bank. Construction began in 2018 and the line was officially opened for passenger train service in October 2019. International freight for neighbouring countries interchanges at the Naivasha Inland Container Depot.

This section, measuring 267 km, stretching from Naivasha to Kisumu, on the eastern shores of Lake Victoria, is contracted to China Communications Construction Company, at a budgeted cost of KSh. 380 billion (US$3.8 billion), borrowed from China Exim Bank. Loan papers between Kenya and China were scheduled for signatures in September 2018, but were deferred until a commercial viability study is conducted on the entire Mombasa–Kisumu railway.
 * Naivasha–Kisumu Section

This section, measuring approximately 135 km, takes the SGR line to the town of Malaba, at the international border with Uganda. CCCC, is the contractor for this section as well. The contract price for this section is about KSh. 169 billion (US$1.69 billion). The price for the Naivasha–Kisumu–Malaba section is KSh. 549 billion (US$5.49 billion) and includes the laying of railway tracks in both sections, dredging and expansion of the port of Kisumu, and the expansion and modernization of the inland container depot at Embakasi, in Nairobi. In May 2024, the Exim Bank of China indicated willingness to fund the extension of the Kenya SGR to the Ugandan border at Malaba.
 * Kisumu–Malaba Section

This railway line, totaling 1500 km, is a component of the Lamu Port and Lamu-Southern Sudan-Ethiopia Transport Corridor (LAPSSET) development project. Under the LAPSSET plan, this line would be extended to Juba in South Sudan.
 * Lamu–Lokichar-Nakodok Section

This 700 km section also falls under the LAPSSET program. It extends from Nairobi to Moyale, at the international border with Kenya's northern neighbor. It is planned to be extended to Addis Ababa, the capital city of Ethiopia. In January 2024, Kenya Railways Corporation estimated the cost for this section at Ksh835.5 billion (US$5.57 billion), with the link from Nairobi to Isiolo costing Ksh358.8 billion (US$2.392 billion) and the remaining stretch to Moyale costing Ksh476.7 billion (US$3.178 billion).
 * Nairobi–Moyale Section

This proposed railway link, measuring an estimated 460 km, would link the two main standard gauge railway systems in Kenya; the Mombasa–Malaba SGR System and the Lamu–Nakodok SGR System.
 * Naivasha–Lokichar Section

Overview
This 1435 mm (4 ft $8 1/2$ in) railway line is intended to ease the transfer of goods and passengers between the port of Mombasa and the cities of Nairobi and Kisumu, in Kenya, Kampala in Uganda, Kigali in Rwanda and subsequently to Bujumbura in Burundi, Juba in South Sudan and to Goma and Bunia in the Democratic Republic of the Congo.

In March 2019, during a state visit to Kenya, President Yoweri Museveni of Uganda and his host, President Uhuru Kenyatta of Kenya, jointly, publicly committed to extend the Standard Gauge Railway (SGR) to Kampala via Malaba.

The Kenyan government in 2020 reached a deal with AfriStar to take over operations and maintenance by May 2022. Kenya received its first SGR rolling stock in May 2017: 18 locomotives and 60 double-stack container cars. In early February 2024, Kenya received a second batch of 50 cars, with an additional 250 cars to be delivered within the month. 20 of the expected wagons will have power plugins to enable the movement of refrigerated containers, while another 20 will be passenger coaches.

Beyond Kenya
Originally envisioned to extend to Kisangani, in line with the East Africa Railway Masterplan, the SGR project ran into political and financial hurdles, caused by Uganda's initial wait-and-see approach, and Chinese hesitance to fund the Naivasha-Kisumu, Kisumu-Malaba, and Malaba-Kampala sections due to the Chinese economic crisis. Since 2023, Kenya and Uganda have embarked on a joint initiative to fund the completion of the SGR to Kampala, with Kenya announcing the commencement of works on the Naivasha-Kisumu section in 2024.

In May 2024, Rwanda and the Democratic Republic of the Congo committed to join the Kenyan-Ugandan initiative and funding drive, with an aim to extend the SGR to Kigali and Kisangani.

Standards
The lines are being built according to Chinese standards.


 * Gauge: Standard gauge
 * Couplers: Janney AAR
 * Brakes: Air
 * Electrification: Overhead catenary 25 kV AC / 50 Hz
 * Target speed (passenger): 120 km/h
 * Target speed (freight): 80 km/h
 * Maximum train load (freight): $3,500$ tonnes gross
 * Designed transport capacity: 20 million tonnes annually
 * Gross transport capacity: 24.9 million tonnes annually (taking double-track sections into account)
 * Minimum railway curve radius: 1200 m (800 m at difficult locations)
 * Maximum (ruling) gradient: 1.85% (1 in 54)
 * Length of arrival & departure track at passing loops: 850 m (dual locomotive: 880 m) [resulting max. train length ~800 m]
 * Maximum vehicle loading gauge height: 5300 mm
 * Trains run on the: Left
 * Railway signalling & train protection system: automatic block signaling & ETCS-2 SIL4
 * Level crossings: permitted (no full grade separation)
 * double stack ISO containers = 2 x 2.4 m or 2 x 2.9 m (unknown) on well cars.