Some cities have established heritage streetcar operations to preserve equipment and infrastructure in addition to offering transit services. San Francisco ran temporary historic trolley services starting during the 1983 Historic Trolley Festival, restoring service to the Market Street Railway, though on a shorter route than its predecessor lines. Streetcar tracks were revealed underneath the streets of Dallas in the 1980s, and a movement to restart streetcar service culminated in the McKinney Avenue Transit Authority starting operation in 1989. San Francisco's F Market became permanent in 1995. The Memphis, Tennessee MATA Trolley heritage streetcar route was entirely newly built, with refurbished streetcars running in mixed traffic.