Anacostia Initial Line The Anacostia Initial Line Segment is a 1.1-mile planned streetcar line connecting the Anacostia Metro Station with the Joint Base Anacostia-Bolling (JBAB), via Firth Sterling Avenue and South Capitol Street. The line includes a storage yard and maintenance facility adjacent to South Capitol Street. Construction is currently underway on the Testing and Commissioning Site that will be housed on this line and is expected to conclude in Summer 2013. The Testing and Commissioning Site will serve as a critical piece of infrastructure for the operation of DC Streetcar service. Vehicles will be tested at this site in advance of their testing and operation on H/Benning and future corridors.