Three MTC routes run the full length of Rajiv Gandhi Salai (OMR) from the Thiruvanmiyur end to Kelambakkam: 102 from Broadway, 570 from Koyambedu (CMBT) and 19B from Saidapet. Route data puts 570 at about every 13 to 14 minutes and 102 at about every 15 minutes, and all three stop at Sholinganallur, Semmancheri, Navalur and the Siruseri end before Kelambakkam.
Two more routes cross OMR from Tambaram rather than running along it. This guide sets out who goes where, how long the trip takes end to end, and what changed on the IT corridor’s bus map in 2026. Frequencies in this guide are averages from the MTC route data on each route page and may be dated; check live timings in the Chennai One app or with MTC before you travel.
The three end-to-end routes
All three reach OMR at the Thiruvanmiyur end and then share the same stops: SRP Tools, IGP, Kandanchavadi, Perungudi, the Thoraipakkam and Mettukuppam stretch, Karapakkam, the Accenture stop, Sholinganallur, Kumaran Nagar, Sathyabama, Semmancheri, Navalur, the Siruseri and SIPCOT stops, Padur, Hindustan College, Chettinad Hospital and Kelambakkam.
They differ before that. 102, which its page notes was formerly 21H, comes from Broadway along the Marina, Santhome and Adyar. 19B starts at Saidapet and runs past Anna University, CLRI and Thiruvanmiyur railway station. 570 is the long cross-city run, starting at CMBT and coming via Vadapalani, Ashok Nagar, Ekkattuthangal, Guindy Industrial Estate, Guru Nanak College and Taramani 100 Feet Road.
| Route | Ends | Length | Average gap | End-to-end time |
|---|---|---|---|---|
| 570 | CMBT to Kelambakkam | 40.5 km | 13-14 min | about 128-133 min |
| 102 | Broadway to Kelambakkam | 39.2 km | 15 min | about 120-130 min |
| 19B | Saidapet to Kelambakkam | 32.1 km | varies, 5-55 min | about 66-68 min |
| 51K | Tambaram to Navalur | 22.3 km | 1.2 hrs | not listed |
| T151 | Tambaram East to Kovalam | 32.7 km | 3.5 hrs | not listed |
Source: MTC route data via Spirit of Chennai route pages, opened 19 October 2026. Times and gaps are as stated on each page and may be dated.
End-to-end journey time listed for both 570 and 102, so for a trip from the city centre to Siruseri, starting on a faster mode and changing on OMR is often the better plan.
Crossing OMR from Tambaram
51K leaves Tambaram East through Camp Road, Madambakkam, Chitlapakkam, Ottiyambakkam, Karanai and Thalambur and ends at Navalur, meeting OMR only there. T151 runs from Tambaram East via Medavakkam junction and Perumbakkam to the Sholinganallur post office stop, then down OMR through Kumaran Nagar, Semmancheri and Navalur to Kelambakkam, before turning to Kovalam on the coast. Both are infrequent in the route data, so check the app before relying on them.
What changed in 2026
The AC electric buses flagged off on 25 August 2026 added several Siruseri routes from the Alandur depot: MAA2 from Chennai Airport to Siruseri IT Park, 76V from Koyambedu, 570R from Alandur Court and 105 from Tambaram West, DT Next reported. For metro users, CMRL’s Metro Connect list runs small bus S98 from Little Mount Metro through Anna University, Madhya Kailash, Tidel Park and the Ascendas IT Park to Taramani. The CMRL website still lists Corridor 3, the Phase II line planned along OMR, under its coming-soon section.
Watch the last bus
The end-to-end routes keep different hours, and the evening cut-offs are what catch people out. The 102 page lists buses from 5 a.m. to 10 p.m. at both Broadway and Kelambakkam. 570 starts earliest, at 4.50 a.m. from CMBT, but its last bus from CMBT is listed at 7.30 p.m., with the last from Kelambakkam at 9.15 p.m. 19B runs from Saidapet between 4.40 a.m. and 7.55 p.m., and from Kelambakkam between 5.50 a.m. and 9.25 p.m. Late shifts in the IT parks are better matched by 102 towards the city.
- From central Chennai to Sholinganallur, 102 and 570 are the frequent options; allow well over an hour.
- From Saidapet or Guindy, 19B is the shortest end-to-end run at 32.1 km.
- From Tambaram to Navalur, 51K is direct but infrequent.
- From the airport to Siruseri, look for the new AC route MAA2.
Quick answers
Which bus goes from Thiruvanmiyur to Kelambakkam on OMR?
Routes 102, 570 and 19B all run the full OMR stretch to Kelambakkam, per MTC route data.
Is there a bus from Koyambedu to Siruseri?
Yes. 570 runs from CMBT via Vadapalani and Guindy and stops at SIPCOT Siruseri. DT Next also lists the new AC route 76V from Koyambedu to Siruseri IT Park.
How long does a bus take from Broadway to Kelambakkam?
The 102 route page gives about 120 to 130 minutes end to end.
Is there a metro on OMR?
Not yet. CMRL lists the OMR line (Corridor 3) as coming soon.
Information checked against official sources on 19 October 2026. Routes, timings and fares can change; confirm on the linked official pages or in the Chennai One app before travelling.
Sources
- Route 102: Broadway to Kelambakkam (MTC route data via Spirit of Chennai route page)
- Route 570: CMBT to Kelambakkam (MTC route data via Spirit of Chennai route page)
- Route 19B: Saidapet to Kelambakkam (MTC route data via Spirit of Chennai route page)
- Route T151: Tambaram East to Kovalam (MTC route data via Spirit of Chennai route page)
- Route 51K: Tambaram to Navalur (MTC route data via Spirit of Chennai route page)
- Chennai Metro Rail: operational lines and stations (CMRL)
- Metro Connect feeder services and MTC small buses (CMRL)
- Metropolitan Transport Corporation, Chennai (Government of Tamil Nadu)
- CM Vijay flags off 130 new AC electric and 120 regular buses in Chennai (DT Next)
- TN launches Chennai One app for travel on public transport with a single QR ticket (PTI via The Week)
