778-km corridor to reduce a 12-hour journey to 2 hours 20 minutes; DPR to be finalized within a month
Hyderabad, November 23, 2025 – The proposed 778-km Hyderabad-Chennai high-speed rail corridor, a project set to transform inter-city travel in South India, has moved significantly closer to reality with the South Central Railway submitting the final alignment to the Tamil Nadu government.
The railway authorities have submitted the alignment to be included in the Detailed Project Report (DPR) and are seeking approvals to keep the survey work on track.
DPR Finalization Within a Month
I Jayakumar, Member Secretary of the Chennai Unified Metropolitan Transport Authority (CUMTA), told reporters that the DPR for the high-speed rail corridor will be finalized within a month after the state government grants its approval.
At Tamil Nadu’s request, the alignment has been revised to include a station at Tirupati, replacing the earlier plan to pass through Gudur, Jayakumar added.
Journey Time Slashed to 2 Hours 20 Minutes
The corridor, designed for high speeds, will slash the current 12-hour journey between Chennai and Hyderabad to approximately 2 hours 20 minutes, making it a game-changer for business travel, tourism, and regional connectivity.
The project will have two stations in Tamil Nadu:
- Chennai Central
- A new station on the Chennai Ring Road near Minjur
Additionally, the railways has requested nearly 50 acres around each station for transit-oriented development to create new commercial and mobility hubs, potentially transforming these locations into major economic centers.
Railway’s Request to State Government
In a letter to the state transport department earlier this week, the South Central Railway sought:
- Early finalization of the alignment and station locations
- In-principle approval for land acquisition
- Incorporation of the rail corridor into Tamil Nadu’s long-term infrastructure master plan
The railways also requested joint field visits with state officials to avoid delays to the Final Location Survey, which is being carried out under a timebound schedule.
Part of Southern High-Speed Network
The Chennai-Hyderabad corridor is one of two high-speed routes planned in the southern region — the other linking Hyderabad with Bengaluru.
Both are part of a longer-term national push to expand India’s high-speed rail footprint beyond the Mumbai-Ahmedabad line, with corridors designed to connect emerging economic hubs across Telangana, Andhra Pradesh, Karnataka, and Tamil Nadu.
Naidu’s Announcement
The move comes following Andhra Pradesh Chief Minister N Chandrababu Naidu’s announcement in September that a survey for the project was already in progress.
“Very soon, the bullet train is going to come to South India. A survey is being done. It will connect Hyderabad, Chennai, Amaravati, and Bengaluru, all four cities,” he had said at an event in Visakhapatnam.
Tamil Nadu Section Details
For Chennai, the project is particularly significant. The 61-km stretch within Tamil Nadu includes two major station proposals — Chennai Central and Chennai Ring Road/Minjur — set to anchor the city’s integration with the high-speed network.
The alignment is based on surveys carried out by government consultancy RITES Limited.
Land Requirements and Clearances
The land requirement for the stretch has been estimated at 223.44 hectares, with railway officials noting that no forest land is involved — an element expected to ease statutory environmental clearances.
The alignment crosses:
- 65 roads
- 21 high-tension electricity lines
This requires close coordination with state departments and utility agencies to ensure structural clearance for the elevated high-speed rail system.
Technical Complexity: 11.6-km Tunnel
The Tamil Nadu section includes a technically complex feature: an 11.6-km tunnel, which will undergo detailed geotechnical investigation before construction methods are finalized.
This tunnel section adds engineering complexity but is essential for maintaining the high-speed corridor’s alignment through densely populated or geographically challenging areas.
Urban Areas Affected
The proposed route passes close to several northern Chennai settlements, including Pondavakkam, Thatchoor, Vichoor, Mathur, and Tondiarpet areas, where construction logistics, access planning, and mitigation of urban disruption will be critical.
Authorities will need to carefully manage the impact on these residential areas during construction while ensuring minimal disruption to existing communities.
Transit-Oriented Development Vision
The request for 50 acres around each station reflects a forward-thinking approach to urban planning. Transit-oriented development around these stations could:
- Create new commercial hubs
- Improve last-mile connectivity
- Generate employment opportunities
- Boost real estate development
- Enhance urban mobility infrastructure
Timeline and Next Steps
With the final alignment submitted and the DPR expected within a month, the project is moving from the planning to the pre-execution phase. Key immediate steps include:
- State government approval of the alignment
- In-principle clearance for land acquisition
- Joint field surveys with state officials
- Finalization of the DPR
- Securing environmental and statutory clearances
Regional Connectivity Revolution
Once completed, the high-speed rail network connecting Hyderabad, Chennai, Bengaluru, and Amaravati will create an unprecedented level of connectivity in South India, potentially:
- Boosting economic integration across four major cities
- Facilitating business travel and tourism
- Creating a southern economic corridor
- Reducing carbon emissions compared to air travel
- Spurring real estate and commercial development along the route
The project represents a transformative investment in South India’s infrastructure, positioning the region for accelerated economic growth and improved quality of life for millions of residents.
