The Jeongneungcheon overpass will be closed down beginning at midnight on February 22nd. The Seoul Metropolitan Government (SMT) saw no choice but to promptly shut down the Jeongneungcheon overpass to ensure the safety of citizens. A 7.5 kilometer stretch of the expressway will be closed off in both directions, from the Seongdong junction (Dongbu highway → the Naebu expressway) to the Gil-eum ramp in the Seongsan-bound lanes, and from the Bukbu Expressway junction to the Sa-geun ramp in the Seongsu-bound lanes.
On February 17th the Seoul Metropolitan Facilities Management Corporation inspected the Jeongneungcheon overpass during the thaw, and found one of 20 tendon cables supporting an overpass damaged at the midpoint between the Wolgok ramp in Seongsu-bound lanes on the Naebu expressway and the Majang ramp. At the request of the Seoul city government, additional inspections were immediately conducted by the Korea Infrastructure Safety and Technology Corporation under the Ministry of Land, Infrastructure and Transport.
The Korea Infrastructure Safety and Technology Corporation discovered that some of the strands forming a tendon were partially ruptured and eroded, and so proposed that “Because of serious defects, immediate measures, including traffic restriction, should be taken.”
Based on the inspection results and subsequent expert advice the Seoul city government decided to close off traffic at 11:40 p.m on the 20th of February.
The Seoul city government will implement fundamental solutions to address the situation. It will install a temporary overpass while restricting traffic. After lifting the restriction, the city government will continue to do repairs. In order to ease inconveniences caused by the temporary closure, the Seoul city government will focus on services informing citizens of alternative routes and will provide additional subway and bus services.
1 hour extended operations of Seoul subway lines 1,4 and 6 will be implemented during rush hour (7:00-10:00, 18:00-20:00). The operation number will be extended to 16 per day. In case of subway delays due to an increased number of passengers, one extra train for each line (1, 4 and 6) will be on standby for emergency deployment. The Seoul city government also plans to extend the number of bus operations on 11 routes to 89 per day.
Beginning at midnight on February 22nd, drivers are to detour to the Dongbu, Bukbu, North Riverside Gangbyun and Olympic highways. Drivers should use other ramps.
Motorists that usually use the Wolgok ramp on the Naebu expressway in the Seongsan-bound lanes are to take the Dongbu highway (Wolleung IC-> Hawolgok IC), and drivers who usually take the Majang entry ramp should take travel from Jongam-ro to Gireum IC (outside line).
Motorists that usually use the Wolgok ramp on the Naebu expressway in Seongsu-bound lanes are to use a route from Hawolgok IC on Bukbu highway to Dongbu highway or Jongam-ro, while drivers who usually take the Majang exit ramp should take the following route: Jeongneung IC-> Arirang-ro -> Bomun-ro or Gireum IC-> Jongam-ro.
The Seoul city government is asking citizens to cooperate by taking alternative routes and using public transportation due to anticipated temporary traffic congestion while it performs the repair and reinforcement work to ensure the safety of citizens.
To minimize inconveniences for citizens, the Seoul City government will do its best to finish the repair and reinforcement work on the Jeongneungcheon overpass as soon as possible.