Megha Bahree of Forbes interviews Afghanistan’s Minister of Mines, Wahidullah Shahrani, about mining projects. The article includes this about the next phase of the railway plans:
Shahrani: Right now we have up the railway line from Uzbekistan to Mazar-i-Sharif, which is a big commercial center. This 75 km long railway line cost $175 million and was funded by the ADB. Next phase will be from Afghanistan to the Turkmenistan border. This is 257kms and will take three years and we expect the tenders out by early next year. Apart from this, MCC is also constructing a 921km long railway line that will link Kabul with Turkmenistan, Pakistan, central highland to Mazar-i-sharif.
Source: In The Shadow Of The Taliban, Afghanistan’s Mining Sector Is Open For Business, Megha Bahree, Forbes, 2010-10-21