TEX Rail (also known as the Tarrant Express Railway, formerly known as the Southwest-to-Northeast Rail Corridor) is an under-construction commuter rail line in Tarrant County, Texas, United States that will provide service from southwest Fort Worth to DFW International Airport via Grapevine and other Tarrant County communities. It is being consturcted by the Fort Worth Transportation Authority ("The T") and is scheduled to open in 2018. The new line is expected to cost $330 million, of which 10 percent would be Grapevine's share. This segment of the Cotton Belt Rail Line will be operated independent of the other two segments, as it is being built by the T, instead of DART, who will be building the other segments.