Courtesy WMATA WMATA broke ground today on a new Metrobus facility in Southwest that could eventually house and maintain 250 Metrobuses (to start, it’ll only hold 114 buses). The new facility is intended to replace the 72-year-old Southeastern Bus Garage – that’s the one the agency had to sell and vacate last year because it was so close to Nationals Park. The building isn’t yet fully funded but is being financed through a combination…