Coordinates: 38°37′32.17″N 90°13′15.08″W / 38.6256028°N 90.2208556°W
The Ewing Yard (also known as Jefferson Avenue Yard) is a rail yard for the St. Louis MetroLink light rail system in Greater St. Louis. One of the Bi-State Development Agency's major operation and maintenance facilities, the yard maintains the fleet of SD-400 and SD-460 electric light rail vehicles.
Located in St. Louis, Missouri, the yard sits on land bounded by Jefferson Avenue to the west, Scott Avenue to the north, and Ewing Avenue to the east.
The yard opened in 1993 with the first MetroLink line. It sits on the former site of Red Stocking Baseball Park.