Prime Minister Narendra Modi inaugurated the Sela Tunnel in Arunachal Pradesh, a strategic ₹825-crore infrastructure project that improves all-weather connectivity to Tawang and strengthens civilian and military transportation near the Indo-China border.
PM Modi Dedicates Strategic Sela Tunnel to the Nation
Prime Minister Narendra Modi inaugurated the Sela Tunnel project in Arunachal Pradesh, marking a major milestone in India’s border infrastructure development. The strategically important tunnel is expected to significantly improve all-weather connectivity to Tawang while enhancing transportation for both the Indian Armed Forces and civilians near the Indo-China border.
The Prime Minister virtually inaugurated the project from Itanagar on March 9, in the presence of Arunachal Pradesh Chief Minister Pema Khandu, Union Minister Kiren Rijiju, and other senior officials.
The project forms part of the Centre’s broader efforts to strengthen infrastructure in border regions while improving connectivity and supporting socio-economic development in the Northeast.
Strategic Location on the Tezpur-Tawang Route
The Sela Tunnel is located in West Kameng district on the Balipara–Charduar–Tawang Road, a strategically significant route connecting Tezpur in Assam with Tawang in Arunachal Pradesh.
Constructed at an estimated cost of ₹825 crore, the tunnel bypasses the Sela Pass, which lies at an altitude of approximately 13,700 feet and often experiences heavy snowfall and adverse weather conditions that disrupt transportation.
The new tunnel provides an all-weather alternative, ensuring smoother movement of both military convoys and civilian traffic throughout the year.
Two-Tunnel System Enhances Safety and Connectivity
The Sela Tunnel System consists of:
- A 1,003-metre-long tunnel
- A 1,595-metre-long tunnel
- Approximately 8.6 kilometres of approach and link roads
The second tunnel includes a dedicated escape tube running alongside the main tunnel, providing emergency evacuation facilities in line with international tunnel safety standards.
Together, the tunnels are designed to improve travel efficiency while ensuring safer movement through one of India’s most challenging mountain regions.
Project Completed Despite Difficult Conditions
Prime Minister Modi laid the foundation stone for the Sela Tunnel on February 9, 2019, with construction commencing on April 1, 2019.
The first controlled blast for excavation was carried out on October 31, 2019, and the project was completed in approximately five years, despite facing multiple challenges, including:
- Rugged Himalayan terrain
- Freezing temperatures
- Water ingress during excavation
- COVID-19 pandemic restrictions
The successful completion highlights the engineering capabilities involved in executing infrastructure projects in high-altitude border areas.
Built Using Advanced Engineering Techniques
The tunnel was constructed using the New Austrian Tunnelling Method (NATM), an internationally recognised technique suited for complex geological conditions.
According to project details:
- More than 90 lakh man-hours were utilised.
- Around 71,000 metric tonnes of cement were used.
- Approximately 5,000 metric tonnes of steel were consumed.
- Nearly 800 metric tonnes of explosives were deployed during construction.
The project also incorporates several advanced safety features, including:
- Modern ventilation systems
- Fire-fighting equipment
- SCADA-based monitoring and control systems
- Emergency communication infrastructure
These measures are designed to ensure safe operations under demanding climatic conditions.
Strengthening Border Infrastructure
The Border Roads Organisation (BRO), which executed the project, described the tunnel as an important addition to India’s border infrastructure network.
The Sela Tunnel also complements the Nechiphu Tunnel, a 500-metre-long tunnel inaugurated by Defence Minister Rajnath Singh in September 2023, together helping eliminate major bottlenecks along the Balipara–Charduar–Tawang Road.
Officials said these projects significantly improve year-round access to border areas while enhancing the operational readiness of the armed forces.
Continued Investment in Border Development
The Central Government has continued to prioritise infrastructure development in border regions through increased funding.
For the financial year 2024–25, the government allocated ₹6,500 crore under the General Staff (GS) Capital Head for infrastructure development, supporting projects aimed at improving strategic connectivity and strengthening national security.
The BRO has also completed 330 infrastructure projects over the past three years, reflecting the government’s sustained focus on developing border regions.
Why the Sela Tunnel Matters
The Sela Tunnel is expected to reduce travel disruptions caused by snowfall and harsh weather while improving connectivity to remote areas of Arunachal Pradesh.
For the armed forces, the tunnel provides faster and more reliable access to forward areas near the Line of Actual Control (LAC). For civilians, it is expected to improve access to healthcare, education, tourism and economic opportunities by ensuring uninterrupted road connectivity throughout the year.
The project is also expected to promote tourism in Tawang and nearby regions by making travel safer and more convenient.
Key Takeaways
- Prime Minister Narendra Modi inaugurated the ₹825-crore Sela Tunnel in Arunachal Pradesh.
- The tunnel improves all-weather connectivity between Tezpur and Tawang by bypassing the high-altitude Sela Pass.
- The project includes two tunnels measuring 1,003 metres and 1,595 metres, along with 8.6 km of approach roads.
- Built using the New Austrian Tunnelling Method (NATM), the tunnel features advanced ventilation, fire safety and SCADA monitoring systems.
- The project strengthens both civilian connectivity and strategic military mobility near the Indo-China border.
FAQs
Where is the Sela Tunnel located?
The Sela Tunnel is located in West Kameng district of Arunachal Pradesh on the Balipara–Charduar–Tawang Road, connecting Tezpur with Tawang.
What is the cost of the Sela Tunnel project?
The project was constructed at an estimated cost of ₹825 crore.
Why is the Sela Tunnel important?
The tunnel provides all-weather connectivity by bypassing the snow-prone Sela Pass, improving transportation for civilians and the Indian Armed Forces.
What are the key features of the tunnel?
The project includes two tunnels, 8.6 km of approach roads, an emergency escape tube, advanced ventilation, fire safety systems and SCADA-based monitoring.
Who constructed the Sela Tunnel?
The project was executed by the Border Roads Organisation (BRO) as part of India’s efforts to strengthen infrastructure in border areas.
