On June 11, 2025, Mr. Apirat Chaiwongnoi, Director-General of the Department of Highways, entered into an Integrity Pact with lead observers, to ensure transparency in the O&M public-private partnership implementation for the Utraphimuk Elevated Tollway Extension Intercity Motorway, Rangsit – Bang Pa-In Section, Project (M5). The ceremony was held at the Manat Kawanish Room, 2nd Floor, Phahonyothin Building, Department of Highways, and evidenced by the DOH’s executives and officials, executives from the Anti-Corruption Organization (Thailand), and the media.
The Director-General of the Department of Highways stated, “To ensure that this large-scale PPP project, which involves a significant investment amount, gains trust and acceptance from all stakeholders, in accordance with the spirit of the Announcement by the State Enterprise Policy Office on Guidelines for Integrating Integrity Pacts into PPP Projects Governed by the Public-Private Partnership Act, 2019 and 2021; the signing of this Integrity Pact allows observers to participate in all relevant procedural steps, starting from the stage the Draft Invitation for Bid, the Draft Request for Proposal (RFP) and the Draft PPP Contract are prepare, to the stage the PPP contract is signed with the selected private party.”
The Utraphimuk Elevated Tollway Extension Intercity Motorway, Rangsit Bang Pa-In Section, Project (M5) will allow the private sector to participate in the project construction investment and be responsible for O&M services under PPP Gross Cost model. With this scheme implemented, the private party will be responsible for construction investment, including the operation and maintenance of the project (Anusornsathan Rangsit Bang Pa-in Section), while the DOH retains ownerships of the revenues and properties. The private party will receive from the DOH the Availability Payment (AP) based on the terms and conditions specified. The project duration is 34 years at most and is divided into 2 phases, namely:
Phase 1: Design, fund raising and construction of an elevated motorway, including installation of motorway systems and related facilities, having the Multi-Lane Free Flow System (M-Flow) applied for the entire project (maximum 4 years)
Phase 2: Operation and maintenance (maximum 30 years from the service commencement date)
Based on the DOH’s plan, the PPP process will be completed by 2026; construction commenced in 2027, and service available to the public in 2031 respectively. Once the M5 service is launched, it is anticipated that the economic benefits worth 7,928 million baht in net present value will be generated, contributing to over 120-billion-baht revenue in the economic system.
As the project owner, the DOH not only recognizes the importance of developing an efficient, modern, and internationally standardized intercity motorway, but also places great emphasis on implementing PPP projects with integrity, impartiality and transparency, aiming to promote regional logistics expansion, enhance trade and investment capabilities, as well as contribute to the nation’s sustainable economic and social development.
