Important traffic diversion in Bangkok: Orange Line construction work starts!
The MRTA announces traffic diversion for construction work on the Orange Line in Bangkok from November 15, 2025.

Important traffic diversion in Bangkok: Orange Line construction work starts!
In Bangkok, one of the most promising infrastructure projects, the Orange Line of the Mass Rapid Transit Authority of Thailand (MRTA), is in the starting blocks. Construction work will begin on November 15, 2025, which will bring significant changes for road users and residents in the area. In order to avoid additional burden on residents, the MRTA has already announced that road users should consider alternative routes.
The center island under the Chalerm Mahanakorn Expressway, which extends from May Fair Place to HEAP Café & Restaurant, is affected. A new ventilation building, IVS06, is being constructed here as part of the Bang Khun Non section to the Thailand Cultural Center. This work is scheduled to last until December 5, 2025 and daily traffic diversions will take place during this time. Fortunately, Vibhavadi Rangsit Road remains accessible with five lanes in both directions, ensuring accessibility to residential areas.
Details about the Orange Line
The wall of progress does not stand still: The Orange Line stretches over 12 stations and connects important hubs in the city. Construction will begin at Bang Khun Non station and run underground along the existing railway line to Siriraj station. The future route will include Sanam Luang, Democracy Monument and Ratchathewi stations, while the route will pass under the Chao Phraya River and parallel to the Phra Pin Klao Bridge. Under the best conditions, all of this can help to noticeably reduce the burden on daily commuter flows.
Another exciting aspect of this route is the planned connection to the Eastern Orange Line from Thailand Cultural Center to Min Buri as well as the MRT Line (Blue Line). The line's private operator, Bangkok Expressway and Metro Public Company Limited (BEM), has already started infrastructure planning, with progress at about 1.90% by October 2024. The relocation of the infrastructure will begin on November 15, 2024, with the first five stations being tackled.
Challenges and historical responsibility
The construction work not only brings with it logistical challenges, but also an awareness of history. BEM has worked closely with the Rattanakosin Historic Island Committee and the Fine Arts Department to ensure that the construction does not negatively impact the historic sites in the area. Artifacts found during construction will even be displayed in the new stations, which could showcase the city's historical connection.
In summary, something urgently needs to be done on Bangkok's streets. The MRTA appeals to all road users to show understanding and choose alternative routes during the construction period. Further information is available via the MRTA hotlines or directly on the Orange Line Project Facebook page.