road construction was expected to delay access to portions of the construction area where the rail line and highway intersect. DART estimated that the delay could push the opening of the Las Colinas extension from December 2011 to August 2012; however, DART also advised that it was determined to keep the original schedule and minimize any delays. In June 2010, DART placed new Orange Line construction on indefinite hold due to declining revenue. However, on September 15, 2010, the agency said that due to cost savings and federal funds, the plans for the line have been revived. On December 13, 2011, DART awarded a contract to design and build the Orange Line extension from Belt Line Road to DFW Airport, valued at about $150 million, with construction to start in early 2012 and an opening date of August 18, 2014, ahead of schedule. Opening and operation The Orange Line started operation on December 6, 2010, with weekday peak service from the Parker Road station to Bachman station on stations shared with DART's Red and Green lines. The first Orange Line-exclusive stations opened with the extension to Irving Convention Center on July 30, 2012, and two more were added on December 3, 2012. The current northwestern terminus, located at Dallas/Fort Worth International Airport, opened on August 18, 2014. Hidden Ridge Station, which was planned with the rest of the Orange Line but deferred until further development justified its construction, opened to revenue service on April 12, 2021. Future plans The Downtown Dallas segment of the route is planned to be rerouted off of the transit mall and run via a new subway tunnel between Victory and Deep Ellum. The D2 Subway is planned to be implemented in 2028 and will feature four new stations served by the Orange Line along the route. Stations Daily service Listed from Northeast to Northwest. Peak-hour only service is highlighted Special event service Listed from East to West Lawnview (Also served by the ) Hatcher (Also served by the ) MLK, Jr. (Also served by the ) Fair Park (Also served by the ) Baylor University Medical Center (Also served by the ) Deep Ellum (Also served by the ) Future/deferred Loop 12 station (deferred) South Las Colinas station (deferred) DFW North station (future branch) References External links Full DART System Map DART Expansion Plans DART Orange Line Expansion Information Dallas Area Rapid Transit light rail