Seoul Subway Line 5 Extension to Gimpo and Geomdan Passes Feasibility Study... Incheon City: "Commuting to Seoul to Improve"

The long-awaited Seoul Subway Line 5 extension project to Gimpo and Geomdan, a major aspiration for residents in the northwestern area of the Seoul metropolitan region, is now set to proceed in earnest.

The Incheon city government announced on March 10, 2026, that the Seoul Subway Line 5 extension project to Gimpo and Geomdan passed the final preliminary feasibility study after being reviewed by the 3rd Fiscal Project Evaluation Committee of the Ministry of Economy and Finance, expressing its welcome for the decision.

This route will be newly constructed over a total distance of 25.8 kilometers, connecting Banghwa in Seoul to Geomdan in Incheon and then on to Gimpo. The total project cost is estimated at 3.5587 trillion won.

Seoul Subway Line 5 Extension to Gimpo and Geomdan Route Map. Provided by Incheon City

The Incheon city government closely collaborated with Gimpo city and the Metropolitan Transport Commission to ensure that the project would pass the preliminary feasibility study.

To secure the project's validity, the city submitted thoroughly revised and supplemented policy analysis data and measures to improve economic feasibility last year. More recently, Mayor Yoo Jeongbok delivered a video message to the subcommittee of the fiscal project evaluation, actively emphasizing both the urgency and necessity of the project.

The city government expects that, once the Seoul Subway Line 5 extension to Gimpo and Geomdan is opened, it will alleviate the chronic traffic congestion in the northwestern metropolitan area and dramatically improve commuting conditions from Geomdan to Seoul.

Mayor Yoo stated, "Following this achievement, we will focus our efforts on ensuring that the Incheon Subway Line 2 extension to Goyang, which is currently underway, also passes the preliminary feasibility study," adding, "With the western metropolitan express railway and Seoul Subway Line 5 extension projects, Geomdan will become the central hub of the metropolitan transportation network."

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