The proposed Rs 35-crore redevelopment of Thiruvanmiyur bus terminus in south Chennai conflicts with the Tamil Nadu State Highways Authority's planned Rs 2,100-crore elevated road corridor under public-private partnership (hybrid annuity) model.

The bus terminus redevelopment spans 1.66 acres with a three-storey design, 6,000 sq metres built-up area, 13 bus bays, capacity for 70 buses, separate passenger boarding and alighting zones, ticket counters, waiting halls, crew rest rooms, medical facilities, shops, and a separate two-storey commercial block.

Structural elements including ramps, platforms, parking areas and depot layout fall within the elevated corridor's approved alignment, according to the highways authority. The elevated corridor has a three-year construction period followed by five years of operation and maintenance, with bids invited.

The highways authority warned that uncoordinated development could trigger redesigns, land acquisition complications and cost escalation for both projects, and compromise long-term mobility planning at the high-density transit hub. It recommended that CMDA withhold approval pending a joint technical review involving the highways department, CMDA, CUMTA, Metropolitan Transport Corporation and other stakeholders to explore alternative design options. Until coordination is completed, the bus terminus project is unlikely to proceed.

GCC floated tender to build 2.5-meter-wide wooden ramp from entrance to shoreline, estimated at Rs 1.18 crore. Pathway uses non-corrosive materials: treated red Meranti, Babool, Brazilian IPE wood, composite decking, marine-grade stainless steel railings, and RCC guard rails. Expected completion in six months.

Third such ramp in city. Marina Beach ramp built November 2022 (263 meters long, 3 meters wide, Rs 1.14 crore) was damaged by Cyclone Mandous in December 2022; reconstructed June 2023 with enhanced durability. Besant Nagar Beach ramp inaugurated February 11, 2025 (190 meters long, 2.8 meters wide).

Redevelopment replaces ageing apartment buildings, allowing existing owners to gain modern amenities and potentially larger homes while developers sell additional units using permitted CMDA floor space index (FSI). Chennai’s shortage of vacant land is pushing builders towards suburban projects, but redevelopment offers buyers homes in established areas with strong social infrastructure and connectivity.

• In Adyar, residents of a 24-apartment complex have sought redevelopment for more than five years. The over-30-year-old building lacks lifts and designated parking, and raised road levels have contributed to monsoon flooding on the ground floor. GST and interior costs have hindered agreement.
• In Nanganallur, residents of a 16-apartment complex with 13 owners took two-and-a-half years to agree on a builder. Its 20-ft-road location and proximity to the airport make it ineligible for additional FSI; the new building will have parking and a lift.
• Tamil Nadu Housing Board (TNHB) properties in Thiruvanmiyur, Besant Nagar, Indira Nagar, Anna Nagar and K.K. Nagar are redevelopment opportunities. TNHB retains rights over rented flats, which it can redevelop and sell.
• Residents of a 30-apartment building, now 48 years old and built in 1978, have pursued redevelopment for five years. Corrosion near the sea and Coastal Regulation Zone (CRZ) rules, introduced in 1992, have complicated the process; they recently obtained CMDA approval.

Tamil Nadu’s 2026–27 Highways and Minor Ports policy note, published on 18 August, omits the proposed four-lane elevated corridor from Thiruvanmiyur to Uthandi, while retaining other works including the ₹621-crore Teynampet–Saidapet corridor. The ECR project had been tendered under reference 02/TANSHA/ECR-EC/2025; KNR Mahabalipuram Infra Private Limited signed a Hybrid Annuity Mode concession agreement with TANSHA on 26 February 2026. KNR described its bid cost as ₹2,163 crore, with 1,095 days of construction and five years of operation from commercial operation date; these are not state expenditure already incurred.

Dilip Buildcon challenged the tender evaluation in the Madras High Court. Dilip Buildcon, M. Venkata Rao Infra Projects and Bekem Infra Projects were classed non-responsive; KNR, NCC and Navayuga were responsive. The corridor was put on hold pending a technical committee review; a temporary stop notice has reportedly been issued, but committee members have not been appointed. A proposed coastal connection from Ennore through Mamallapuram towards Puducherry is at an earlier stage.

Separately, the policy note retains six-laning of 6.60 km of ECR through Neelankarai, Injambakkam and Sholinganallur, costing ₹165.22 crore.

Due to Chennai Metro Rail underground construction on Lattice Bridge (L.B.) Road, the stretch from Indian Oil Petrol Bunk Junction to L.B. Road-M.G. Road Junction will be completely closed to traffic from Saturday, June 27, 2026.

Traffic diversions implemented:

Buses and heavy vehicles towards Thiru.Vi.Ka Bridge: Diverted at L.B. Road-M.G. Road Junction via M.G. Road, Shastri Nagar 1st Main Road, left turn at Shastri Nagar 1st Avenue. Vehicles from Besant Nagar diverted to 7th Avenue M.G. Road, right turn to Shastri Nagar 1st Main Road.

Vehicles towards Thiruvanmiyur: Via L.B. Road-Shastri Nagar Junction, Shastri Nagar 1st Avenue, right turn to 11th Cross Street, left turn to 8th Cross Street, right turn to 10th Cross Street, M.G. Road.

Light motor vehicles towards Thiru.Vi.Ka Bridge: Diverted via Indira Nagar 2nd Avenue, 1st Main Road, 1st Avenue, L.B. Road (Indian Oil Petrol Bunk Signal Junction). Heavy vehicle movement prohibited on Indira Nagar 2nd Avenue during diversion.

Road conversions: Shastri Nagar 1st Main Road to L.B. Road via M.G. Road converted to two-way; Shastri Nagar 1st Avenue to Shastri Nagar 1st Main Road converted to two-way. Shastri Nagar 1st Main Road operates as one-way towards Thiru.Vi.Ka Bridge; 11th Cross Street as one-way towards Thiruvanmiyur.