Bihar is growing fast with new roads, metros, expressways, bridges, hospitals and many important development projects. These projects will make daily travel easier, support business and improve the overall quality of life. The state government and central government are working together to build a better and more connected Bihar.

Here are the major mega projects that are expected to shape Bihar by 2025.

1. Patna Metro

Patna Metro is one of the biggest upcoming changes in the capital city. The first metro line from New ISBT to Bhootnath Road is progressing well and work can be seen in many parts of Patna. Once the metro becomes operational, people will save a lot of time during peak traffic hours.

This modern transportation system will help students, office workers and daily travellers move across the city quickly and comfortably. It will also reduce traffic jams on major roads and make Patna look more modern.

Highlights:

• 5-phase metro project
• First line: New ISBT → Bhootnath Road
• Built by L&T with DMRC
• Cost: ₹13,365+ crore

2. AIIMS Darbhanga

AIIMS Darbhanga is set to become a major healthcare centre for North Bihar. The new institute is coming up with a large 750-bed hospital and a medical college that will train 100 students every year. The campus is being developed on a big land area of 151 acres

This project will provide advanced treatment to people who currently travel long distances to Patna or Delhi. Once it opens, thousands of families will get access to better medical care and the region will also see new jobs in the health sector.

Highlights:

• 750-bed modern hospital
• 100 MBBS seats
• ₹1,264 crore project
• Built on 151 acres

3. Patna Ring Road

The Patna Ring Road is a long expressway being built around the city to reduce traffic inside Patna. It will connect Patna with Vaishali and Saran districts through a smooth 6-lane road covering almost 140 km.

With the Ring Road, vehicles travelling long distances will no longer need to enter the crowded city. This will help reduce congestion and also support new housing and business development along the outer belt of Patna.

Highlights:

• 140 km long Ring Road
• 6-lane expressway
• ₹4,800 crore project
• Connects Patna, Vaishali, Saran

4. Patna–Kolkata Expressway

The Patna–Kolkata Expressway is a high-speed road that will directly connect Bihar’s capital to Kolkata. This 450 km highway will be completely new, built as a Greenfield project under Bharatmala Phase 2.

Once completed, travel time between Patna and Kolkata will reduce sharply. It will also make goods transport faster and support business growth between the two states.

Highlights:

• 450 km expressway
• 6-lane Greenfield project
• Cost: ₹18,000 crore
• Under Bharatmala Phase 2

5. Buxar–Bhagalpur Expressway

This expressway will link the western and eastern parts of Bihar through a fast and smooth road running close to the Ganga. The project connects UP, Bihar and Jharkhand and will greatly improve movement across districts.

It will be helpful for traders, farmers and transporters who regularly move products across the state. Travel will become faster and easier for people living along the long river belt.

Highlights:

• 350 km expressway
• Runs parallel to the Ganga
• Connects UP → Bihar → Jharkhand

6. Patna Airport Expansion

Patna Airport is being upgraded to handle more flights and passengers. The new terminal building is large, modern and designed for smoother airport operations. More aircraft parking space is also being added.

These upgrades will make the airport better and more comfortable for travellers. Students, tourists and working professionals will experience faster services and reduced crowding at the airport.

Highlights:

• New 65,155 sq. m terminal
• Aircraft parking: 14 slots
• Cost: ₹12.17 billion

7. APJ Abdul Kalam Science City

APJ Abdul Kalam Science City is being built as an interactive learning centre for children and science lovers. It will have exhibitions, a modern planetarium, labs and activity zones that make learning fun.

Once open, it will become a major attraction for schools and families visiting Patna. It aims to inspire children to explore science and technology from a young age.

Highlights:

• 36,000 sq. ft area
• Cost: ₹640 crore
• Planetarium, labs, galleries

8. Raxaul–Haldia Port Expressway

The Raxaul–Haldia Expressway is an important project for regional trade. The expressway will connect Bihar to the Haldia Port in West Bengal, helping goods from Bihar and Nepal reach global markets faster.

This long corridor will pass through multiple districts, giving industries better access to transport routes. It will boost economic activity and open new trade opportunities.

Highlights:

• 650 km expressway
• Passes through Bihar, Jharkhand, Bengal
• Supports international trade

9. Aurangabad–Darbhanga (Amas–Darbhanga) Expressway

This expressway will connect South Bihar to the northern districts through a fast 4/6-lane highway. It passes through eight major districts including Gaya, Patna, Vaishali and Darbhanga.

The route will reduce travel time for students, patients, workers and transport vehicles. It will help in smoother movement between two major regions of the state.

Highlights:

• 4/6-lane expressway
• Covers 8 districts
• Built in 4 construction packages

10. Gandhi Setu Parallel Bridge

To reduce pressure on the old Mahatma Gandhi Setu, a new parallel bridge is being built across the Ganga. The old bridge often faces heavy traffic, so the new structure will handle a large part of the load.

Once this bridge becomes operational, travel between Patna and Hajipur will become much smoother and faster. It will help lakhs of people who use this route every day.

Highlights:

• 14 km bridge
• ₹1,794 crore project
• Connects Patna to Hajipur

11. Nalanda International Cricket Stadium

A world-class cricket stadium is coming up in Rajgir. It will have seating for 45,000 people and facilities for many indoor and outdoor sports.

This stadium will help Bihar host national-level matches and promote sports among youth. It will also increase tourism in the heritage-rich region of Rajgir.

Highlights:

• 45,000 seating capacity
• Multi-sports complex
• Located in Rajgir

12. Vikramshila Setu Parallel Bridge

Bhagalpur’s important Ganga bridge, Vikramshila Setu, is often overcrowded. To manage the load, a new parallel bridge is being constructed with a wider and stronger design.

The new bridge will help improve movement between Bhagalpur and nearby regions. It will reduce delays and support transport activities.

Highlights:

• 4.45 km long
• 29 meters wide
• Key Ganga crossing route

13. Ganga Water Lift Project

This project will bring clean drinking water to districts like Gaya, Rajgir and Nawada. Water from the Ganga will be lifted, purified and supplied through a long pipeline network.

The project aims to solve long-standing water problems in these regions and provide a stable supply for lakhs of people.

Highlights:

• ₹4,174 crore project
• 190.9 km pipeline
• Supplies 3 districts

14. Patna Marine Drive (Loknayak Ganga Path)

Patna Marine Drive is one of the most attractive new roads in the city. Built along the Ganga, it offers a scenic and smooth drive. Two phases are already open and the third phase is under construction.

The road will reduce traffic in the central areas and provide a beautiful riverside driving experience for the people of Patna.

Highlights:

• ₹5,600 crore project
• Phase 1 & 2 operational
• Phase 3 in progress

Conclusion

Bihar is moving forward with some of the biggest development projects in its history. From expressways and metro lines to new bridges, hospitals and science centres, these projects will change the way people travel, live and work across the state. As these projects become ready by 2025, Bihar will be more connected, more modern and better prepared for future growth.

For millions of people, these developments mean easier travel, better services and new opportunities. Bihar’s growth journey has clearly begun and the coming years will shape a stronger and brighter future for the entire state.