Airtrain (also known as the Airport railway line) is the privately owned commuter railway line that extends 13.0 km (8.1 mi) northeast from Brisbane (15.9 km from Central station by rail), the state capital of Queensland, to Brisbane Airport (BNE) at both its separate International and Domestic terminals. It was opened in 2001. The line is carried on an elevated prestressed concrete viaduct for its entire 8.5 km (5.3 mi) length after branching off from the Queensland Rail City network at Eagle Junction railway station.