Ulaanbaatar
Second-Stage Tender for Ulaanbaatar Metro Project to Be Announced in August
Society
Ulaanbaatar, July 31, 2025 /MONTSAME/. Budget officials and the consortium of the Ulaanbaatar Metro Project, led by the consultancy company “Dohwa Engineering,” conducted a site visit to the 28th khoroo of Bayanzurkh District.
The eastern depot of the Ulaanbaatar Metro project is planned for construction on a 26.6-hectare site within the 28th khoroo of Bayanzurkh district, centralizing operations such as technical servicing, diagnostics, repairs, and parking of the rolling stock. The second stage of the contractor selection process will be announced, followed by contract signing in October 2025 and the commencement of construction work in 2026. Within the framework of the project, a general environmental status assessment has been conducted, and the land certificate for the depot construction site has been issued.
Railway Engineer of the Ulaanbaatar Metro Project B. Amgalanbayar explained, “The Ulaanbaatar Metro will have a daily capacity of 17,200 persons and a total of 15 stations. As for the structure and design, it will span 14 underground stations, with the terminal station located above ground, adjacent to the maintenance depot. The metro is scheduled to run at intervals of 4.5 minutes.”
Mechanical Design Engineer at the consulting company “Dohwa Engineering” Kim Jin Nam elaborated, "The plan includes a total of 19 fully automated, driverless metro trainsets. The maintenance depot will comprise distinct sections for automated servicing, washing, control and monitoring, and rolling stock parking. The parking facilities will be built fully enclosed, specifically designed to withstand Mongolia’s harsh climate conditions. The metros will be centrally managed from the control center."
Routine maintenance is scheduled every two to five years, for which a centralized maintenance facility will be established. According to the operational plan, metro trainsets will travel along the designated route, execute a turnaround at the western terminal station in Tolgoit, proceed and arrive at the eastern depot for washing and maintenance, and enter the parking zone.
Based on current estimates, a total of thirteen 30-meter-long Tunnel Boring Machines (TBMs) will be used for the project to be commissioned by 2030. The TBM will operate at a depth of 25 meters underground, enabling tunnel excavation and installation of tunnel lining segments. Specialists highlighted that since tunnelling will be conducted in densely populated areas of the city, vibrations will be negligible at the surface level.
