Tancheon-dong-ro Underground Project Begins in Earnest... Alternative and Detour Roads Required from the 7th

Vehicles Go Underground... Green Spaces Reborn for Citizens
New Alternative Roads Opened to Minimize Traffic Disruptions
Main Access Road to Open in March Next Year with New Baseball Stadium

Seoul City is set to commence the undergrounding project for the eastern road along the Tancheon River in Songpa-gu in earnest. Due to the construction, access between Bongeun Bridge and the section of Tancheon-dong-ro will be restricted starting from April 7.

Perspective view of Tancheon Riverside waterfront space development along the Han River. Provided by Seoul City

On April 1, Seoul City announced that it will fully launch the Tancheon-dong-ro undergrounding project aiming for completion by 2030, as part of efforts to create a waterfront space along the Tancheon and Hangang rivers. The plan is to establish a large-scale pedestrian axis connecting COEX, the Tancheon and Jamsil MICE Complex, and the Han River, allowing all citizens to enjoy the area, while also undergrounding Olympic-daero and Tancheon-dong-ro. In particular, vehicle traffic around the Jamsil MICE Complex will be moved entirely underground, with the above-ground area transformed into a pedestrian-focused leisure space harmonized with green spaces.

The creation of the Tancheon and Hangang riverbank waterfront space and the undergrounding of Tancheon-dong-ro are being pursued with the goal of completion by 2030. Once the construction is finished, a green pedestrian network will be established from COEX and the Jamsil area to the Tancheon and Hangang rivers, greatly improving citizens' access to waterfront spaces.

Im Chungkeun, Director of the Urban Infrastructure Headquarters of Seoul City, stated, "Through this construction, we expect to significantly enhance pedestrian accessibility and leisure functions of the Tancheon waterfront space," and added, "As some inconvenience is expected during the construction period, we ask citizens to actively cooperate by using alternative and detour roads and driving safely."

Due to the Tancheon-dong-ro undergrounding project, from 10:00 a.m. on April 7, traffic will be restricted on the section between Bongeun Bridge and Tancheon-dong-ro (from Sports Complex Intersection to Tancheon Underpass). To minimize traffic inconvenience, Seoul City will open newly constructed alternative roads in line with these restrictions.

First, vehicles traveling from Olympic-daero to Samseong-dong should use the new lower-level road to be opened along the Tancheon confluence floodplain, passing Samseong Bridge, instead of the existing Tancheon-dong-ro. Vehicles traveling from Olympic-daero to Jamsil-dong should use Baekjegobun-ro (Shincheon Underpass) instead of the existing Tancheon-dong-ro (Tancheon Underpass). Vehicles entering Olympic-daero from Jamsil-dong via Tancheon-dong-ro should also use Baekjegobun-ro instead of Tancheon-dong-ro.

Vehicles traveling from the Dongbu Expressway exit ramp through Bongeun Bridge and Tancheon-dong-ro to Samseong-dong should use the newly opened Daechi Underpass (toward Gangnam Driver's License Test Center). Vehicles entering Olympic-daero from the Dongbu Expressway exit ramp via Bongeun Bridge and Tancheon-dong-ro can use Olympic-ro or Baekjegobun-ro after exiting the newly opened Daechi Underpass, or continue straight on the Dongbu Expressway exit ramp to use Teheran-ro 115-gil and Bongeunsa-ro 113-gil.

The city plans to enhance on-site guidance through road variable message signs (VMS), banners, and other forms of signage, as well as provide information via promotional materials, elevator video displays, traffic applications, and navigation system updates.

Seoul City also plans to establish the main access road from Bongeun Bridge to Jamsil Main Stadium to coincide with the opening of the alternative baseball stadium (Jamsil Main Stadium), with the road scheduled to open in March 2027 in order to improve convenience for spectators. The home games for the LG Twins and Doosan Bears are scheduled to be held at Jamsil Main Stadium for five seasons from 2027 to 2031, and a new dome stadium will be built on the site of the current Jamsil Baseball Stadium.

This content was produced with the assistance of AI translation services.