The project to turn a congested section of the Seobu Expressway into an underground road is now underway. The 10.33-kilometer section of the Seobu Expressway—a major arterial road that connects the southern end of Seongsandaegyo (Bridge) to Geumcheon IC, where the road meets the Seohaean Expressway—will be transformed into an underground tunnel road with four lanes. The construction has taken off this year and is expected to finish by 2019.
The project had been delayed due to a stream of complaints from residents of the surrounding areas, but through a series of negotiations, the Seoul Metropolitan Government was able to draw out an agreement between the government and the residents, in January 2014.
The Seoul Metropolitan Government said that the project will significantly reduce traffic congestion, as it plans to bring an estimated 50,000 vehicles into the underground road. The city plans to refurbish the current road above as a regular road, with eco-friendly parks and areas, which connects to Anyangcheon.
Once the current road above is changed into a regular road, intersections with overpasses will be turned into regular crossroads with traffic lights, and crosswalks will be installed for more convenient resident access to Anyangcheon Park.
Furthermore, hard shoulders on the Seobu Expressway would no longer be necessary and will be refurbished as eco-friendly areas with parks and recreational areas. With less traffic above the ground and the creation of eco-friendly areas, the life environment in the Geumcheon, Guro, and Yeongdeungpo areas around the Seobu Expressway is expected to improve significantly.
Traffic noise pollution due to the close proximity of the entryway to the Seobu Underground Road and residential districts Vertical soundproof walls, currently installed between the Seobu Expressway and Gyeongbu Railroad Line, will be replaced with twice the amount of folded soundproof walls to reduce noise levels.
The proximity of the residential area to the waste transfer station, where food waste and recycled materials from Geumcheon-gu are treated, will result in residential odor pollution and environmental damages. Request to move the site of the stationUtilize a plot of land above ground. By making use of the excavation site, which will be filled with dirt after the tunnel is finished, efficient use of land is expected.
Overview of the Seobu Underground Road Project
○Location: Yangpyeong-dong, Yeongdeungpo-gu (southern end of Seongsandaegyo Bridge)-Doksan-dong, Geuncheon-gu (Geumcheon IC).
○Scale: four lanes, extension 10.33 km (exclusively for compact cars).
○Total Cost: KRW 528 billion.
○Financing Method: private investment business (BTO).