What Happened
- Prime Minister Narendra Modi inaugurated the Delhi–Dehradun Expressway on April 14, 2026
- The 210-km, 12/6-lane access-controlled expressway cuts travel time between Delhi and Dehradun from approximately 6 hours to 2.5 hours
- The expressway passes through Rajaji National Park via a 4.82-km elevated flyover with 6-metre vertical clearance underneath, allowing free movement of elephants and other wildlife
- The project cost approximately ₹13,000 crore and reduces road distance from 250 km to 210 km
- It is only the second highway in India with a dedicated wildlife protection corridor, after NH-44
- A Wildlife Institute of India (WII) report confirmed the success of wildlife underpasses along the corridor
Static Topic Bridges
National Highways and Infrastructure Development in India
The National Highways Authority of India (NHAI) is the nodal agency for building and maintaining National Highways under the National Highways Authority of India Act, 1988. Expressways are high-speed, access-controlled roads classified separately from National Highways. The government's PM GatiShakti National Master Plan (2021) integrates multi-modal connectivity infrastructure — roads, rail, aviation, ports — into a unified planning framework, with the goal of reducing logistics costs from approximately 14% of GDP to below 8%.
- NHAI established: 1988 under NHAI Act; operational from 1995
- PM GatiShakti launched: October 2021; digitally integrates 16 ministries' infrastructure data
- India's National Highway network: Over 1.45 lakh km (as of 2025)
- Delhi–Dehradun Expressway: Part of the larger Delhi–Saharanpur–Dehradun corridor
- Bharatmala Pariyojana Phase-1: Parent programme under which this expressway is built; targets 34,800 km of economic corridors
Connection to this news: The Delhi–Dehradun Expressway exemplifies Bharatmala-era infrastructure — high-speed, access-controlled, and increasingly designed with environmental safeguards. Its elevated wildlife corridor sets a template for balancing development with conservation.
Rajaji National Park and Tiger Reserve
Rajaji National Park, located across Haridwar, Dehradun, and Pauri Garhwal districts of Uttarakhand, spans approximately 820 sq km in the Shivalik Hills. It was declared a National Park in 1983 and upgraded to a Tiger Reserve in 2015. The park sits at the north-western limit of both the Bengal tiger and the Asian elephant's range, making its corridors ecologically critical. Rajaji is also part of the Shivalik Elephant Reserve under Project Elephant, and supports one of India's largest Asian elephant populations.
- Area: 820 sq km; Shivalik Hills (foothills of Himalayas)
- Status: National Park (1983) + Tiger Reserve (2015)
- Key species: Asian elephant, Bengal tiger, Indian leopard, chital, sambar deer, sloth bear, over 315 bird species
- Project Elephant designation: Shivalik Elephant Reserve; protects critical elephant corridors
- Significance: North-western limit of tiger and elephant distribution in India
Connection to this news: The expressway cuts through Rajaji's territory, which is a critical elephant corridor. The 4.82-km elevated section with 6-metre clearance was specifically engineered to allow elephant herds and other wildlife to pass beneath the road without disruption — turning an infrastructure bottleneck into a conservation design milestone.
Wildlife Corridors and Green Infrastructure
A wildlife corridor is a strip of habitat connecting isolated patches of wildlife habitat, allowing species to move between them for food, migration, breeding, and genetic exchange. Habitat fragmentation caused by roads, railways, and settlements is one of the leading threats to large mammals in India. The Wildlife Institute of India (WII), an autonomous body under the Ministry of Environment, Forest and Climate Change, studies and designs wildlife passages including underpasses, overpasses, and elevated sections in infrastructure projects.
- Wildlife corridors prevent genetic isolation and local extinction of species
- Two types of crossings: Underpasses (tunnels below road/rail) and overpasses/elevated sections (road runs above habitat)
- NH-44: India's first highway with a dedicated wildlife corridor (in Assam, for elephants)
- Delhi–Dehradun Expressway: India's second; uses elevated section design over Rajaji
- Specifications: 4.82-km elevated flyover + 6-metre vertical clearance for elephants; 2.32-km twin tunnel; 2.12-km at-grade hill section
- WII: Established 1982 at Dehradun; India's premier wildlife research institution
Connection to this news: The expressway's elevated wildlife corridor over Rajaji is not merely a concession to environmentalists — it is a legally necessary mitigation measure required by the Wildlife Protection Act and National Board for Wildlife clearance. Its success, validated by WII, offers a replicable model for India's expanding highway network through forested zones.
Environmental Clearance for Infrastructure Projects
Under the Environment (Protection) Act, 1986 and the EIA Notification, 2006, large infrastructure projects must obtain Environment Clearance (EC) from the Ministry of Environment, Forest and Climate Change. Projects passing through National Parks or Tiger Reserves additionally require clearance from the National Board for Wildlife (NBWL), chaired by the Prime Minister. The Supreme Court has consistently held that projects inside or near protected areas must demonstrate that they cause the "least possible damage" to wildlife.
- EIA Notification 2006: Mandates public consultation and expert appraisal for Category A and B projects
- NBWL: Chaired by Prime Minister; must clear projects within 10 km of National Parks/Wildlife Sanctuaries
- Wildlife Protection Act (WPA), 1972: Section 35 — no construction or alterations inside National Parks without NBWL approval
- Rajaji clearance condition: Elevated corridor and underpasses were mandatory NBWL clearance conditions
- Forest Clearance: Also required under Forest (Conservation) Act, 1980 for any forest land diversion
Connection to this news: The expressway's elevated wildlife section is the direct result of NBWL and Supreme Court-mandated conditions — highlighting how conservation law shapes infrastructure design in ecologically sensitive zones.
Key Facts & Data
- Expressway length: 210 km (Delhi–Saharanpur–Dehradun); 12-lane near Delhi, 6-lane toward Dehradun
- Cost: Approximately ₹13,000 crore
- Travel time reduction: From ~6 hours to 2.5 hours; distance reduced from 250 km to 210 km
- Rajaji elevated section: 4.82 km long; 6-metre vertical clearance for elephant movement
- Also includes: 2.32-km twin-tube tunnel + 2.12-km at-grade hill section inside Rajaji zone
- Rajaji National Park: 820 sq km; Tiger Reserve since 2015; Project Elephant (Shivalik Elephant Reserve)
- Second highway in India with dedicated wildlife corridor (after NH-44 in Assam)
- WII validated success of wildlife underpasses along corridor (April 2026 report)
- Parent programme: Bharatmala Pariyojana Phase-1
- NHAI: Nodal agency; PM GatiShakti framework provides integrated planning backbone