The most important constructions are the Juckville Tunnel, the viaduct over the Abanga swamp, and the bridge over the confluence between the Ogooue and the Ivindo Rivers.

[1] Originally intended to reach Makokou and carry iron ore, its route was changed for political reasons, namely to keep within national borders manganese ore traffic from COMILOG that went on the COMILOG Cableway via the Republic of Congo.

Because the line was built well into the era of earthmoving machinery, the need to choose a narrow gauge to save costs was no longer important.

[2] The discovery of uranium helped to secure British interest in the project, and led to the injection of funds by the Conservative government under prime minister Margaret Thatcher.

Many UK expatriates took the place of French workers and the building of the railway progressed rapidly from that point.

British firms involved included Wimpey International, who seconded staff to Taylor Woodrow.

[8] In February 2023 Fortescue Metals Group inked in an agreement to develop iron ore at Belinga with a road and railway haulage to an existing port.