Aerial view of the Gwangmyeong Bridge intersection. /Courtesy of Seoul City

The Seoul Metropolitan Government announced on the 21st that it will completely suspend two-way vehicle traffic in the Gwangmyeong Bridge underpass starting at midnight on August 29 and in the Okgeum Bridge underpass starting at midnight on August 31. This traffic suspension is to carry out construction to convert the two underpasses into surface intersections.

The Gwangmyeong Bridge and Okgeum Bridge (east side) underpasses being closed will have all four lanes of two-way traffic controlled. Instead, four lanes of a newly constructed surface intersection (two straight lanes and two Seongsan-bound lanes) will be available. Four horizontal three-color traffic lights will be installed at each intersection.

Traffic system when the Gwangmyeong Bridge underpass is closed. /Courtesy of Seoul City

This surface transformation work is expected to take about seven months, until March of next year. This construction is the second phase of the general road transformation project for the Western Beltway, following the Okmok Bridge (east side) underpass (in a straight direction) on June 15. The Seoul Metropolitan Government plans to sequentially carry out the surface transformation up to the Gocheok Bridge underpass in the first half of next year.

Traffic system when the Okgeum Bridge underpass is closed. /Courtesy of Seoul City

Ahn Dae-hee, head of the Seoul Urban Infrastructure Headquarters, said, "Vehicles passing through the construction section should drive slowly and, if possible, use detour roads."

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