Sound Transit's Link light rail in Washington state consists of two lines, Central Link and Tacoma Link. A 21-mile line was approved by a ballot measure in 1996. However, a series of financial missteps and planning errors resulted in escalating costs and delayed construction. The 21-mile line was shortened to a 14-mile line running from Westlake Center in downtown Seattle south to Sea-Tac Airport, and opened in 2009. Federal grants received in 2005 funded a northern extension to University of Washington in 2016.