Despite not having official status as a junction, a freight-only branch line to Mae Nam station, Bangkok Port, and the Bang Chak Oil Refinery branches off from here. A few container and oil trains use the line daily.
Aerial view of Makkasan railway station (bottom-right structure with red roof next to the Airport Rail Link) and Makkasan depot
Although Makkasan station (Airport Rail Link), shares the same name as Makkasan railway station, it is at a different location; the Airport Rail Link station is east of this station, and is instead located on top of Asok Halt. Furthermore, the Airport Rail Link does not stop at this station, although it does pass through its own elevated viaduct running parallel to the SRT Eastern Line. The closest stations to the Airport Rail Link are at Phaya Thai and Asok Halt.