From 2000 to 2012, Tacoma Dome Station served as the southern terminus of the Sounder South Line. Sound Transit began construction on an extension to Lakewood in 2009, after years of delays due to cost increases and a lack of dedicated funding. of new tracks were built between Tacoma Dome Station and the existing Lakewood Subdivision, including an overpass over Pacific Avenue, as part of the extension. Sounder trains began serving South Tacoma and Lakewood stations on October 8, 2012, with some trips terminating at either Lakewood or Tacoma Dome.