The Ring Road 2.5 project , specifically the Dam Hong - National Highway 1A section, is being invested in under a BT (build-transfer) contract. It spans approximately 1.6 km and has a total investment of over 1,300 billion VND. This is one of the important transportation projects, expected to contribute to completing the urban infrastructure network, reducing traffic congestion, and creating momentum for socio -economic development in the southern area of Hanoi.
Construction began in 2014 with a target completion date of 2017. However, due to various objective reasons, the project could not be completed on schedule. By 2020, with only about 40% of the construction completed, the entire project had to be temporarily suspended. Prolonged obstacles related to land clearance and the extension of BT contract addendums caused the project to be stalled for many years. After a nearly five-year suspension, the project officially resumed construction at the end of May 2025, following approval from the Hanoi People's Committee.
According to observations by VTC News reporters in mid-January 2026, the construction site was bustling with activity. All construction areas were brightly lit at night, and machinery operated non-stop.
Multiple construction teams are working simultaneously along the entire route, from the roadbed and surface to auxiliary components.
According to the design, the project is divided into 5 bidding packages, including 3 main construction packages. Based on the volume and nature of each item, the contractors have allocated appropriate manpower and equipment, flexibly adjusting the construction plan to meet the progress requirements. Organizing construction simultaneously allows the items to be implemented in parallel, minimizing waiting time between stages.
According to a representative of the Ring Road 2.5 project management company (Hoang Mai Construction Investment Co., Ltd. - Hanoi), since the project was restarted in May 2025, contractors have mobilized maximum resources and organized continuous construction. Currently, many contract packages have completed approximately 80-90% of the work as per the contract.
With the requirement to complete the entire project before January 31st, the construction units are focusing intensely on the final stage.
The construction site is organized with a "three shifts, four teams" system, taking full advantage of favorable weather conditions to accelerate progress and ensure that the main components are completed on schedule.
According to the plan, after January 25th, the road will be equipped with traffic signs, painted road markings, and the remaining traffic safety items will be completed. These are the final steps in preparation for the technical opening to traffic at the end of January 2026.
The L3 bridge across the Lu River – one of the key components of the project – is also being constructed urgently by the contractors.
Upon completion and commissioning, the 2.5 Ring Road section from Dam Hong to National Highway 1A is expected to significantly improve traffic conditions in the area, enhance connectivity between major roads, and gradually complete Hanoi's urban ring road system.
Ring Road 2.5 is a crucial transportation artery in Hanoi's urban infrastructure planning, playing a role in connecting and sharing traffic volume with existing ring roads.
The entire route is approximately 19.64 km long, with a planned cross-sectional width of 40–50 m; the starting point is in the Ciputra new urban area and the end point intersects with Ring Road 3, near Thanh Tri Bridge.
According to the plan, the route is divided into 13 sections with various investment forms. To date, Hanoi has completed and put into operation 5 sections, totaling approximately 11.28 km in length; and is currently constructing 5 other sections totaling approximately 6.1 km. The remaining three sections, approximately 2.26 km long, have been approved by the city for investment and are preparing for implementation.
Source: https://vtcnews.vn/cong-truong-vanh-dai-2-5-sang-den-xuyen-dem-chay-nuoc-rut-truc-ngay-thong-xe-ar999221.html
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