State Highway 99, also known as the Grand Parkway, is a Texas highway which opened its first section in 1994. When State Highway 99 is complete, it will be the longest beltway in the U.S., and the third (outer) loop within Houston–The Woodlands–Sugar Land metropolitan area, with Interstate 610 being the first (inner) loop, and Beltway 8 (Sam Houston Tollway) being the second (middle) loop. The proposed loop has been divided into 11 separate segments for construction and funding purposes. Only 3 of the 11 segments are complete. As of December 25, 2011, all segments except A have been fully funded.