Bihar has 57 National Highways totalling 6,389 km, more than 90 per cent of its rural roads are paved, and the state has invested about ₹1.80 lakh crore in roads and bridges since 2005, according to the Bihar Economic Survey 2025-26. The stated goal is to reach Patna from anywhere in the state within four hours.
These notes set out what the Survey says about roads and expressways, rural connectivity, road safety, green mobility, airports and inland waterways, then the challenges and a way forward for a BPSC Mains answer.
Overview of Bihar’s Physical Infrastructure
| Indicator | Survey figure |
|---|---|
| Investment in roads and bridges, 2005–26 | ₹1.80 lakh crore |
| National Highways | 57 |
| Total National Highway length | 6,389 km |
| Bihar’s share of India’s road network | 5.5% |
| Rural roads paved | More than 90% |
| Vision | Patna accessible within 4 hours from anywhere in Bihar |
National Highways and Expressways
Major expressway projects listed for Bihar
- Patna–Purnea Expressway
- Gorakhpur–Siliguri Expressway
- Raxaul–Haldia Expressway
- Varanasi–Ranchi–Kolkata Expressway
These corridors are intended to improve inter-state connectivity, reduce travel time, support freight movement and connect economic centres.
Update: on 3 June 2026 the Union Cabinet approved the four-laning of the 143.5-km Khagaria–Purnea section of NH-31 and NH-231, through Khagaria, Bhagalpur, Katihar and Purnea districts, at a cost of ₹3,936.05 crore on the build-operate-transfer (toll) model.
Bharatmala Pariyojana
A Central Government umbrella programme launched in 2017 to improve road connectivity and freight efficiency.
Main components
- Economic corridors
- Inter-corridor and feeder routes
- Border and port connectivity
- Improved movement of passengers and goods
Funding sources: Fuel cess, toll revenue, market borrowings and NHAI bonds.
Exam relevance: Connect Bharatmala with logistics efficiency, lower transport costs, industrial development and regional integration.
Rural Road Connectivity
The Bihar Economic Survey 2025-26 reports that over 90% of rural roads are paved, with Sheikhpura at 96.4%.
Major schemes
| Scheme | Objective |
|---|---|
| Pradhan Mantri Gram Sadak Yojana (PMGSY) | All-weather road connectivity to eligible unconnected rural habitations |
| Mukhya Mantri Gram Sampark Yojana (MMGSY) | Connectivity for habitations with populations of 250–499 not covered under PMGSY |
| Gramin Tola Sampark Nischay Yojana (GTSNY) | Connect hamlets and smaller settlements within villages |
PMGSY facts
- Launched on 25 December 2000.
- Centrally sponsored scheme.
- The scheme follows a 60:40 Centre–State funding pattern from 2015–16.
Why rural roads matter
- Help farmers reach markets and storage facilities.
- Improve access to schools, healthcare and public services.
- Reduce transport costs and isolation.
- Support rural non-farm employment.
Road Safety
The Survey reports the following road-safety indicators:
| Indicator | Bihar | India |
|---|---|---|
| Accidents per lakh population | 8.7 | 34.6 |
| Deaths per lakh population | 7.1 | 12.2 |
Measures to improve road safety
- Better road engineering and signage.
- Enforcement of speed limits and helmet/seat-belt rules.
- Black-spot identification and correction.
- Emergency medical response and trauma-care facilities.
- Highway patrols and public awareness.
Rural Transport and Green Mobility
Mukhya Mantri Gram Parivahan Yojana (MMGPY)
Promotes self-employment among rural youth through transport services.
Mukhya Mantri Prakhand Parivahan Yojana (MMPPY)
- Subsidy: ₹5 lakh per bus.
- Maximum of seven buses per block, excluding district headquarters.
Bihar Electric Vehicle Policy, 2023
- Target: 30% electric vehicles in total vehicle registrations by 2030.
- The policy runs for five years.
- Includes purchase incentives and support for charging infrastructure.
Bihar Clean Fuel Policy, 2019
Diesel three-wheelers were phased out in:
- Patna from 2022
- Muzaffarpur and Gaya from 2023
Mains linkage: Electric mobility can reduce urban air pollution and fossil-fuel dependence, but requires reliable charging infrastructure, affordable vehicles and effective implementation.
Air Transport
Four airports are functional:
| Airport | Status |
|---|---|
| Jay Prakash Narayan International Airport, Patna | Functional |
| Gaya International Airport | Functional |
| Darbhanga Airport | Functional |
| Purnea Airport | Functional |
The Survey also lists 13 additional airports or locations in the pipeline, including Bhagalpur, Rajgir, Bihta, Madhubani and Muzaffarpur.
Significance
- Better connectivity for business and tourism.
- Faster movement of passengers and high-value goods.
- Improved access to national markets.
- Potential to attract investment and generate employment.
The Survey reports annual growth of around 20% in the air-transport sector’s GVA over 2011–25.
Water Transport
Jal Marg Vikas Project (JMVP)
- An Inland Waterways Authority of India (IWAI) project with World Bank support.
- Develops National Waterway-1, covering the Ganga–Bhagirathi–Hooghly river system.
- The JMVP stretch from Haldia to Varanasi is 1,390 km (the whole of NW-1, Prayagraj to Haldia, is 1,620 km).
Importance for Bihar
- Offers an alternative to road and rail freight.
- Can lower bulk-transport costs.
- Supports trade, logistics and river-based economic activity.
- May reduce road congestion and emissions if integrated effectively with other transport modes.
Current Development Worth Adding to Your Notes
The Aunta–Simaria bridge project was inaugurated in August 2025. The project includes an 8.15-km bridge development, including a 1.86-km six-lane bridge over the Ganga, built at a cost of over ₹1,870 crore, and improves connectivity between the Mokama area of Patna district and Begusarai.
This is a useful example for answers on Bihar’s transport infrastructure, regional connectivity and economic integration.
Major Challenges
- Regional disparities: Remote and flood-prone areas can remain poorly connected despite overall road expansion.
- Maintenance: Road quality requires sustained maintenance, not only new construction.
- Flood vulnerability: Flooding and river erosion can damage roads and disrupt transport.
- Road safety: Better infrastructure must be accompanied by enforcement and emergency response.
- Urban congestion: Growing towns require integrated public transport and traffic management.
- Environmental concerns: Road and airport expansion should account for land acquisition, ecological impacts and emissions.
- Last-mile connectivity: Major highways provide limited benefits if villages, farms and small enterprises cannot access them efficiently.
Way Forward
- Prioritise maintenance and climate-resilient roads in flood-prone districts.
- Improve last-mile connections between villages, markets and highways.
- Integrate road, rail, air and inland-waterway transport.
- Strengthen road-safety enforcement and emergency services.
- Expand electric public transport and charging infrastructure.
- Improve logistics facilities near industrial and agricultural clusters.
- Use transparent project monitoring to reduce delays and cost overruns.
BPSC Mains Answer Framework
Possible question: Examine the role of physical infrastructure in Bihar’s economic development. Identify the major challenges and suggest measures.
Introduction: Physical infrastructure is essential for reducing regional disparities, improving market access and attracting investment in Bihar.
Body: Discuss road and expressway development, rural connectivity, air transport, inland waterways and green mobility. Use examples such as PMGSY, Bharatmala, the Patna–Purnea corridor and the Aunta–Simaria bridge. Then explain challenges involving maintenance, flood vulnerability, road safety and last-mile connectivity.
Conclusion: Bihar needs to shift from infrastructure creation alone to reliable, safe, climate-resilient and integrated transport networks that generate measurable economic and social benefits.
High-priority facts to revise
- National Highways listed: 57
- National Highway length: 6,389 km
- Investment in roads and bridges, 2005–26: ₹1.80 lakh crore
- Rural roads paved: over 90%
- EV registration target: 30% by 2030
- Jal Marg Vikas Project stretch of NW-1: 1,390 km (Haldia–Varanasi)
- Aunta–Simaria bridge project: inaugurated in August 2025
Frequently asked questions
How many National Highways does Bihar have?
Fifty-seven, with a total length of 6,389 km, according to the Bihar Economic Survey 2025-26. Bihar has 5.5 per cent of India’s road network.
Which expressways are planned in Bihar?
The Survey lists the Patna–Purnea, Gorakhpur–Siliguri, Raxaul–Haldia and Varanasi–Ranchi–Kolkata expressways. Bihar’s first expressway projects are still under construction.
How many airports are functional in Bihar?
Four: Patna (Jay Prakash Narayan International), Gaya, Darbhanga and Purnea. Thirteen more locations, including Bhagalpur, Rajgir, Bihta, Madhubani and Muzaffarpur, are in the pipeline.
What is the EV target under the Bihar Electric Vehicle Policy, 2023?
Thirty per cent of all new vehicle registrations to be electric by 2030, supported by purchase incentives and charging infrastructure over the policy’s five-year life.
Related pages
- BPSC posts and salary: pay level and in-hand pay
- BPSC interview: process, marks and likely questions
- BPSC cut-off, 65th to 71st, by category
- Industrial sector in India and Bihar
- Jal-Jeevan-Hariyali Mission
- Budget 2026-27 and Economic Survey quiz: 185 MCQs
- Bihar economy previous-year questions
- Bihar’s economic transition and regional inequality
Sources
Figures are from the Bihar Economic Survey 2025-26 (Finance Department, Government of Bihar, February 2026) unless another source is named. Checked 31 October 2026.
- Bihar Economic Survey 2025-26 (English PDF), Finance Department, Government of Bihar
- PMO: Aunta–Simaria bridge (August 2025)
- Cabinet approval of the Khagaria–Purnea four-laning (3 June 2026)
Nandan