The Line 9 extension wasn’t the only thing that opened today. A new transfer tunnel at Seoul Station from the Airport Railroad to Lines 1 and 4 has finally opened making transfers for those heading to the airport via the subway and bus much easier and faster.
If you’ve ever tried to make this transfer, you’ll know that previously the two subway lines and the Airport Rail were not connected directly. This meant that to transfer, passengers had to leave the subway station, go up the escalators, navigate through the crowds at Seoul Station and then take another escalator down to the Airport Rail station. The new transfer tunnel reduces the transfer distance by 400m from 700m to 300m and also cuts down the time from 12 to 5 minutes.
Comparison of new and previous transfer paths.
Construction on the tunnel began in June 2012 and went through various safety tests as well as a “user check” together with potential users which included the Disabled Association. Similar to longer transfer paths in other stations, moving walkways are also installed to help keep crowds flowing. Note that the transfer tunnel doesn’t include the Gyeongeui Line which only has services to Munsan once an hour.