The Border Roads Organisation (BRO) has completed a 180-foot triple-double reinforced Bailey bridge in the Kurung Kumey district of Arunachal Pradesh, restoring critical road connectivity along the Line of Actual Control (LAC) corridor. Built under Project Arunank by the 756 Task Force and Team 85 Road Construction Company (RCC), the bridge reconnects the strategic Hapoli-Sarli-Huri road network that serves remote border villages and military outposts. The project was executed under extreme conditions, with personnel working through relentless monsoon rains and difficult mountainous terrain to complete the deployment.
What Is a Bailey Bridge?
A Bailey bridge is a portable, pre-fabricated truss bridge that was originally developed by the British during 1940-1941 for military use in the Second World War. Its key advantage lies in its modular design: all components are small and light enough to be carried in trucks and assembled by hand without cranes or heavy equipment. A standard Bailey bridge is made of steel panels, transoms, and stringers that bolt together to form a strong, load-bearing structure.
The bridge constructed in Kurung Kumey is a triple-double reinforced Bailey bridge, meaning it uses three panels side by side and two panels stacked vertically on each side. This configuration gives the bridge significantly higher load-bearing capacity, making it capable of carrying heavy military vehicles such as tanks and artillery. The 180-foot span was chosen to cross the river or gorge at the site while meeting the load requirements of the Hapoli-Sarli-Huri road corridor.
Bailey bridges are widely used by the BRO across India’s border regions because they can be deployed quickly, require no permanent foundations, and provide reliable crossings in terrain where conventional bridge construction would take years.
Project Arunank: The BRO’s Frontier Arm in Arunachal
The bridge was constructed under Project Arunank, one of 18 active projects of the Border Roads Organisation. Project Arunank was raised in 2008 and is headquartered at Naharlagun, Arunachal Pradesh. It is responsible for building and maintaining strategic roads and bridges across some of the state’s most inaccessible terrain.
In its 17 years of operation (as of its 18th Raising Day in October 2025), Project Arunank has constructed and maintained over 696 km of roads and 1.18 km of major bridges in Arunachal Pradesh. Among its landmark achievements is the 278 km Hapoli-Sarli-Huri Road, which was blacktopped for the first time since Independence. The project also established road connectivity to Maza, the final Indian settlement along the LAC, in December 2022.
Project Arunank works under the Border Roads Development Board (BRDB), which is chaired by the Minister of State for Defence. The BRO itself was established on 7 May 1960 in the aftermath of India’s border challenges, and it operates under the Ministry of Defence with its headquarters in New Delhi. By 2022, the BRO had constructed over 55,000 km of roads, more than 450 permanent bridges, and 19 airfields in strategic locations across India.
Strategic Importance of the Kurung Kumey Bridge
Kurung Kumey district lies along the southwestern slopes of the Eastern Himalayan range in western Arunachal Pradesh, close to the Indo-China border. The district’s headquarters, Koloriang, sits at an altitude of about 1,000 metres and is among the most remote district headquarters in the state. The Hapoli-Sarli-Huri road network, of which this bridge is a critical link, connects these remote frontier areas to the rest of Arunachal Pradesh.
Military Significance
The bridge strengthens the Indian Army’s operational capabilities along the LAC by enabling smooth movement of troops, artillery, and heavy equipment to forward positions. During the monsoon months, road links in this region are frequently damaged by landslides and flash floods, cutting off border posts for extended periods. An all-weather Bailey bridge at this location ensures that supply lines remain functional even during heavy rains.
Civilian Impact
For the local population living in isolated border villages, the bridge is a lifeline. It provides reliable access to healthcare, education, and markets in district towns. Before this bridge was restored, residents often had to take long detours or wait weeks for road repairs after monsoon damage. The restored connectivity brings these communities closer to the mainstream economy and public services.
Aatma Nirbhar Bharat and Border Infrastructure
The successful completion of this bridge reflects the BRO’s ongoing efforts under the Aatma Nirbhar Bharat (Self-Reliant India) initiative. The BRO has been prioritising indigenous construction methods and materials to reduce dependence on external resources. In recent years, the organisation has adopted innovative technologies such as steel slag, cut-and-cover tunnels, geo cells, and Gabion walls to build durable infrastructure in difficult terrain.
The BRO’s budget allocation has seen a significant increase in recent years, rising from ₹6,500 crore in 2021-22 to ₹18,700 crore in 2026-27, reflecting the government’s focus on border infrastructure. In 2025-26 alone, the BRO constructed 1,125 km of roads, and the target for 2026-27 has been set at 1,500 km. The construction of strategic bridges like the one in Kurung Kumey is part of a larger programme to build 410 two-lane, class-70 bridges (capable of carrying tanks) along the 3,440 km McMahon Line.
BRO Projects in Arunachal Pradesh
Arunachal Pradesh hosts four BRO projects, more than any other state, reflecting its strategic importance:
| Project | Headquarters | Area of Focus |
|---|---|---|
| Project Vartak | Tezpur | One of the oldest (raised 1960), handles China Study Group roads |
| Project Arunank | Naharlagun | Raised 2008, focuses on western and central Arunachal |
| Project Brahmank | Pasighat | Eastern Arunachal |
| Project Udayak | Doom Dooma | North-east region including Arunachal and Assam |
Key Takeaways
- The Border Roads Organisation (BRO) completed a 180-foot triple-double reinforced Bailey bridge in Kurung Kumey, Arunachal Pradesh, restoring connectivity along the Hapoli-Sarli-Huri road network on the LAC corridor.
- The project was executed under Project Arunank (raised in 2008, headquartered at Naharlagun) by the 756 Task Force and Team 85 RCC.
- A Bailey bridge is a portable, pre-fabricated truss bridge developed by the British in 1940-1941 for military use. A triple-double reinforced configuration uses three panels side by side and two stacked vertically, enabling it to carry heavy military vehicles.
- The BRO was established on 7 May 1960 and operates under the Ministry of Defence. It has constructed over 55,000 km of roads, 450+ permanent bridges, and 19 airfields by 2022.
- Project Arunank has built over 696 km of roads and 1.18 km of major bridges, including the 278 km Hapoli-Sarli-Huri Road blacktopped for the first time since Independence.
- Arunachal Pradesh hosts four BRO projects (Vartak, Arunank, Brahmank, Udayak), the most in any state, reflecting its strategic importance along the McMahon Line.
