Bengaluru's Satellite Town Ring Road: Hoskote To Tamil Nadu Border Set To Open By June 2026

The Hoskote-Hosur stretch of the 280.8-km Bengaluru Satellite Town Ring Road (STRR, NH-948A) is likely to reach the Tamil Nadu border by June 2026, after a delay of nearly 16 months from its original February 2025 deadline. The National Highways Authority of India (NHAI) has picked up pace on the final segment, with a key rail overbridge near Lingadeeramallasandra remaining the last hurdle.

The STRR is a 4 to 6-lane access-controlled corridor planned as a ring around Bengaluru. It connects satellite towns including Dobbasapete, Doddaballapura, Devanahalli, Sulibele, Hoskote, Sarjapura, Attibele, Anekal, Tattekere, Kanakapura, Ramanagara and Magadi, before extending to Hosur in Tamil Nadu. The larger network spans about 288 km and is designed to divert long-distance and goods traffic away from the city.

The 20.9-km Hoskote-Hosur section is the final missing link in the corridor. Most of the roadwork is complete. Only about 650 metres remain, but this portion involves a rail overbridge across the Bengaluru-Chennai railway line, delaying the project.

The delay centres on a 54-metre bowstring girder that will carry six lanes of traffic. The structure has been fabricated and moved to the site. However, its launch depends on clearances from the South Western Railway.

The Temporary Arrangement Drawing submitted by NHAI received in-principle approval in January, nearly nine months after submission. Final clearance is still pending. Foundation work near the railway track has been held up until approvals are granted.

Before installation, railway authorities must complete signalling and electrical inspections. Welding quality has to be cleared by the Research Designs and Standards Organisation. The final launch requires a traffic block on the Bengaluru-Chennai route. Such blocks are allowed only once in 15 days and for a few hours, slowing execution.

The delay has pushed costs beyond the initial estimate of ₹382 crore for this stretch. Officials said faster clearances could have helped complete the project earlier. They have also suggested reducing railway crossings in future projects.

NHAI has proposed an online clearance system for projects involving railway land, similar to the Centre's PARIVESH portal, to speed up approvals. Railway officials, however, said clearances are issued once all technical requirements are met.

Once completed, this stretch will take the STRR's operational length to about 102.6 km. It will also connect with the Bengaluru-Chennai Expressway (NE-7). The corridor is expected to ease congestion on Old Madras Road and Sarjapur Road.

The full STRR project, estimated at around ₹17,000 crore, will act as a bypass for commercial vehicles and inter-state traffic. This is expected to reduce congestion within Bengaluru and improve connectivity across satellite towns.

With final railway approvals pending, the completion of the Hoskote-Hosur stretch now depends on clearance timelines. If approvals come through, the STRR is expected to reach the Tamil Nadu border by June.