Fri Jan 09 18:57:14 UTC 2026: Headline: Chennai Metro Rail’s Phase II Integrates with Existing Rail Networks Despite Construction Challenges
The Story:
Chennai is set to enhance its public transportation infrastructure with the integration of Chennai Metro Rail’s Phase II network with the existing suburban and MRTS (Mass Rapid Transit System) lines. The ambitious project involves the construction of an elevated corridor where the Phase II Metro line from Madhavaram to Sholinganallur will run above the existing MRTS line between St. Thomas Mount and Adambakkam. The construction, fraught with space constraints and logistical challenges, required innovative engineering solutions, including the use of a custom-made lightweight launching girder and a unique suspended support system.
Key Points:
- Chennai Metro Rail’s Phase II corridor 5 will connect Madhavaram to Sholinganallur, covering 47 km.
- The MRTS network is being extended from Chennai Beach to St. Thomas Mount.
- A 500-metre stretch between St. Thomas Mount and Adambakkam will see both MRTS and Metro Rail networks sharing a common elevated alignment.
- Construction involved a lightweight 100-tonne launching girder, custom-made for the project, due to space limitations.
- Suburban train services were temporarily suspended in June-July 2025 to facilitate the construction.
- A “cast in-situ portal” technique was employed, using a suspended support system derived from existing MRTS piers.
Key Takeaways:
- Chennai is making significant progress in integrating its various rail networks to improve connectivity and reduce congestion.
- The project highlights the complexities of urban infrastructure development, requiring innovative engineering and logistical planning.
- Collaboration between different railway authorities (Railways and CMRL) is crucial for successful project implementation.
- Temporary disruptions to existing services are unavoidable during such large-scale construction projects.
First Piper 