Police Department (SAPD) serves Downtown from the Central Substation. The main SAPD headquarters are in Downtown. The San Antonio Fire Department (SAFD), the city's fire protection and EMS service, is also based in Downtown. The Texas Fourth Court of Appeals is located in the Cadena-Reeves Justice Center in Downtown San Antonio. The San Antonio Post Office and Courthouse, located at 615 East Houston Street, functions as a United States Postal Service post office and as a regional office for federal agencies. In 2009, $61 million were allocated to renovate the Post Office and Courthouse as a part of federal stimulus spending. The six story, neoclassical, Beaux-Arts building opened in 1937. Diplomatic missions The Consulate-General of Mexico in San Antonio is located at 127 Navarro Street in Downtown. Transportation Greyhound Lines operates the San Antonio Station at 500 North St. Marys Street. VIA Metropolitan Transit operates an Information Center at 211 W. Commerce Street, its Main Executive Office, called The Grand, at 123 N. Medina Street, Ellis Alley Park & Ride, and Centro Plaza, the company's main transit facility, which is located across from the Grand. Both Centro Plaza and The Grand are located in the Cattleman Square District of Downtown. Amtrak operates a train station in St. Paul's Square. Since Downtown is located at the City's geographical center, Interstate Highways 10, 35, and 37 combine to form a Downtown Circulator, which completely surrounds Downtown San Antonio. IH35 borders Downtown S.A. to the north and west, IH10 to the south and west (overlaps with IH35), and IH37 along the east end. Education Primary and secondary schools Downtown is within the San Antonio Independent School District, which is headquartered in there. Austin Academy, a PreK-8 school, is northwest of Downtown and serves parts of northern Downtown. Bonham Elementary School, an elementary school which will become PreK-8 by 2009, is south of Downtown and serves southern Downtown. Bowden Elementary School, east of Downtown, serves parts of northern Downtown. Middle schools serving sections of Downtown include Tafolla, Twain, and Wheatley. Northern Downtown is in the attendance zone of Fox Tech High School in Downtown, while southern parts are zoned to Brackenridge High School, south of Downtown. Navarro High School, a magnet school, is adjacent to Downtown. Colleges and universities The University of Texas at San Antonio has both its Downtown and HemisFair Park campuses in the downtown area. Trinity University is a private, primarily