中国铁建
The US$11 billion project is being undertaken by a complex consortium of international suppliers, and there have been concerns about corruption, waste, and delays. The Central and Western sections of the road were built by a consortium of China Railway Construction Corporation and CITIC while the Eastern section was constructed by a Japanese consortium of Kajima Corporation, Nishimatsu Construction Company, Itochu Corporation, Hazama Corporation and Taisei Corporation.