Plans for Huge Multi-mode COEX Transfer Center

In August, plans for a huge underground transfer center in Gangnam between Samseong Station (Line 2) and Bongeunsa Station (Line 9) were unveiled by Seoul.

Located next to the busy COEX mall, the COEX Transfer Center will be no small project and involves stations for multiple modes of transport being built over the top of each other in the center of one of Seoul’s busiest areas. Preliminary designs outline the following plans for the five floors underground.

  • B1 – Mall connected to both Lines 2 and 9
  • B2 – City Airport Terminal
  • B3 – Transfer Area, Light Rail (Sinsa – Wirye)
  • B4 – GTX
  • B5 – KTX
COEX Transfer Center

Image: Seoul

New COEX Station

An updated version (May 2016) of plans for the transfer centre. Click to enlarge. Source: Seoul

Obviously with a a project of this magnitude in the heart of Seoul’s business district, disruptions will cause havoc with the already heavy traffic (both human and vehicular) in the area. The city plans to build the entire center “in one go” to reduce the amount of disruption to the area.

Investigating the possibility of building the project this way and securing funds is expected to be ready by March 2016, with an aim to have to begin construction in 2017 and open the center in 2021.

KTX? GTX? Light Rail?

Believe it or not, all of these have been planned for a while.

As you may know, next year KTXs will be coming to Suseo Station in Gangnam-gu. (We wrote about this a very long time ago and we’ll posting another update about this with the latest info very soon.)

The high speed rail line will be extended from Suseo to the new transfer center and will also serve as the first GTX line (Line A) to open from Dongtan. The GTX Line from Uijeongbu to Geumjeong (Line C) is also expected to pass through the station.

Gangnam Future Transport Plans

Plans for future projects passing through the transport center from earlier this year. Image: Gangnam-gu

The light rail line on the third floor underground is also another planned project called the Wirye – Sinsa Line which I get the feeling still has quite a lot of planning to go through before it’s given the green light.

The GTX line from Samseong to Dongtan is expected to be the first line up and running in time for opening in 2021. Obviously it’s no secret that dates for projects like these often get pushed out further once construction is underway, so don’t be surprised if things are delayed by a year or two.

Long-term there are even other connections expected to run from the station such as a KTX connection to Uijeongbu and the Southern Express Line which I won’t speculate on as it’s not sure yet if they’ll even go ahead.


A Big Job

I don’t often put many projects under our “Large Scale Projects” category, but with the number of transport modes being built in such a prominent place, deep underground, if everything goes ahead it would definitely become one of the most major transport hubs in Seoul.

The project area is 2,356,000 million ㎥ and Seoul says that if the project goes ahead, will involve using 25 tons of soil or approximately 24,000 dump trucks.

Though the project is being built “in one go” to reduce disruption, construction won’t just be contained to the immediate area but also surrounding areas which the new lines run through. Of course this means Gangnam will once again be full of narrow roads and constructions sites which have become a familiar sight following the construction of Line 9, SinBundang Line and Bundang Line Extension in the same area in recent years.

Modelled on France’s La Défense Station near Paris which services several railway lines, Seoul hopes that the transport center will eventually become a major hub that is recognised internationally.

The center will be located under this stretch of road.

The center will be located under this stretch of road.

Related Links:  Seoul Metropolitan GovernmentThe Financial News

About This Author

Originally from New Zealand, Andy moved to Korea in 2007 and very quickly became interested in the many different public transport and urban development projects around Korea. He currently lives in Sejong city and is particularly interested in rail projects, transport hubs and technology.


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  • I hope that this also involves a redesign of the absurdly-wide Yeongdong-daero. I’ll never forget just how simultaneously nerve-wracking and underwhelming that area is, as a pedestrian at least, and probably as a driver too, what with having to contend with 12 lanes of road in total. Gangnam won’t begin to rival Jongno’s streetscape until they get their road widths under control.

    Luke 2 years ago Reply

  • […] reach Samseong Station by COEX in the heart of the business district in Gangnam. See our recent post for more […]

    Suseo High Speed Railway to Open Next Year – Kojects 2 years ago Reply

  • Any updates on this? Is this still happening?

    Philip C. Partington 12 months ago Reply

    • Hi Philip, from a quick look no updates that I can see. As far as I know this will still be going ahead and construction is already happening at the site of the former KEPCO building. As always, we’ll keep an ear out!

      kojects 12 months ago Reply

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