It provides an additional transport line besides the Kamchik road pass, improving the connection between the Fergana Valley with the rest of Uzbekistan.
The 123 kilometres (76 mi) long electric rail line connects the existing railways at Angren and Pop to create a direct route between the cities of Tashkent and Namangan.
In September 2013, the China Railway Tunnel Group signed a construction contract worth $455 million.
In May 2014, the Export-Import Bank of China announced it would lend Uzbekistan US$350 million to fund the Chinese tunnel contract.
[6] In February 2015, the World Bank confirmed it would lend Uzbekistan US$195 million for the Angren–Pap Railway.