The Downtown Denton Transit Center serves as the primary depot for the A-train, a 21-mile (34 km) commuter rail line in Denton County that parallels Interstate 35E between Denton and Carrollton and acts as an extension with the Dallas Area Rapid Transit (DART) Green Line at Trinity Mills Station in Carrollton. It is operated by the Denton County Transportation Authority (DCTA) and serves Denton County. It opened on June 20, 2011. The area surrounding the station is industrial in nature, but quickly being re-developed into a mixed-use live/work/play area with the Spiral Diner and East End Lofts anchoring the area.