Uzbek national railway UTY has begun construction of the Hayratan to Mazar-i-Sharif railway.

Construction of Afghan railway launched

AFGHANISTAN: A ceremony on January 22 marked the start of construction of a 75 km rail link from Uzbekistan to the city of Mazar-i-Sharif in northern Afghanistan. The line is being built by Uzbek national railway UTY, which said it will be ‘a vivid testimony to the friendly relations between the two countries.’
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Source: Railway Gazette International, 2010-01-27