The Underpass on Local Road 315 'Yongin Boradong' Section to Open

Design Plan for the Underground Passage on Local Road No. 315, Yongin Section

The section of 'Local Road 315' in Bora-dong, Giheung-gu, Yongin-si, Gyeonggi-do, which had chronic congestion during commuting hours, will be tunneled underground.

On the 10th, Yongin City announced that it will resume the 'Local Road 315 Underground Road Project,' proposed as a solution to traffic inconvenience in the Bora-dong area, after 16 years of planning and 2 years and 6 months of construction suspension.

The city previously established a 'Mutual Cooperation Agreement (draft) for the Promotion of Local Road 315 Underground Road' with the Ministry of Land, Infrastructure and Transport, Korea Expressway Corporation, and Korea Land and Housing Corporation (LH), agreeing to jointly cooperate for the smooth progress of the project.

According to the agreement, LH will be responsible for the 940m section of the 'Local Road 315 Underground Road New Construction' (4 lanes in both directions), and Korea Expressway Corporation (under the Ministry of Land, Infrastructure and Transport) will handle the 'New Construction of the Underground Expressway under the Gyeongbu Expressway (Yongin~Seoul)' from Giheung JCT to Cheonggyesan JCT, a 26.1km section (4 to 6 lanes in both directions).

Additionally, Korea Expressway Corporation will incorporate safety measures for the underground road in the detailed design of the underground expressway, and LH will transparently share related information.

Yongin City will strive to resolve complaints such as traffic restrictions due to construction and to expedite permits and approvals.

The Local Road 315 Underground Road Project is a project promoted by LH since 2007 as part of the comprehensive traffic improvement measures for the Bora Residential Development District in Giheung-gu, Yongin-si.

Initially, an overpass was planned, but after gathering residents' opinions in 2008, the plan was changed to an underground road, and Yongin City and LH signed an implementation agreement to share the project costs.

Subsequently, administrative procedures such as approval of the implementation plan and compensation proceeded relatively smoothly, but due to the city's financial difficulties from 2012 to 2016, construction only began in June 2019.

The construction, which started with difficulty, was suspended in December 2020. This was because Korea Expressway Corporation opposed the project, citing that the underground expressway under the Gyeongbu Expressway and the Local Road 315 underground road were too close, following the Ministry of Land, Infrastructure and Transport's plan to underground the Gyeongbu Expressway.

After the inauguration of Mayor Lee Sang-il in July last year during the 8th local government term, the city requested Korea Expressway Corporation to change the location of the Gyeongbu underground expressway entrance and exit or adjust the longitudinal slope, and proposed to the Ministry of Land, Infrastructure and Transport to promptly revise the 'Underground Road Design Guidelines.'

In March, the Ministry revised the 'Underground Road Design Guidelines,' setting the longitudinal slope of the mainline entrance and exit sections to 5% (maximum 6%) when designing new underground expressways.

Due to the guideline changes, the distance between the Gyeongbu underground expressway and the Local Road 315 underground road increased, making it possible to construct both roads.

Construction is expected to resume as early as next month.

Mayor Lee Sang-il stated, "With the underground road being constructed at Bora Intersection, a major traffic congestion point in Giheung-gu will disappear," and added, "We expect significant improvement in the chronic congestion sections through this construction."

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