"Tajikistan has tackled all the problems. The final version of railway route will be determined after Tajikistan reaches an agreement with Turkmenistan," the minister told a press conference.
The talks with Turkmenistan will start in September after a Shanghai Cooperation Organization (SCO) summit in the Tajik capital.
A memorandum of understanding on the railway was signed by presidents of the three nations in Ashgabat on March 20, 2013.
The first track of the cross-border railway was laid in July 2013, which is expected to be completed in 2015.
Representatives of the three countries met in Ashgabat on April 18 to discuss route planning and financing.
The Islamic Development Bank has expressed interest in financing the Tajik section of the 1-billion-U.S. dollar project. Endi