Texas State Highway Spur 601 or Spur 601 is a 7.4-mile (11.9 km) freeway spur route in El Paso County in the U.S. State of Texas. It runs from US 54 in El Paso eastward to Loop 375 in the Fort Bliss Military Reservation. The construction of this freeway improved access to Biggs Army Airfield and Fort Bliss. The route is officially known as the Liberty Expressway.