Bengaluru–Mysuru Expressway
Bengaluru–Mysuru Expressway
Also known as NH 275, Bengaluru–Mysuru Access Controlled Highway and Old State Highway 17 corridor
119 km
Open
Karnataka
Expressway
Route
Bengaluru–Mysuru Expressway runs 119 km from Bengaluru (Kengeri), Karnataka to Mysuru, Karnataka.
Crosses Karnataka.
Through Bengaluru, Bidadi, Ramanagara, Channapatna, Maddur, Mandya, Srirangapatna and Mysuru.
Why it matters
This is Karnataka's busiest tourist and commuter corridor — Mysuru Palace, Srirangapatna, Kodagu and Bandipur all sit at the far end of it, and lakhs of Bengaluru families drive it on weekends. It also carries the first leg of the Bengaluru–Mangaluru economic corridor, so factory goods heading for the west coast ports start their journey here. For the towns in between, the bypasses gave back their own main streets.
History
The road between Bengaluru and Mysuru was once a crowded state highway that took about three hours to drive, because it ran straight through the main street of every town on the way. It was rebuilt as a wide, access-controlled expressway on National Highway 275 under the Bharatmala programme and opened in March 2023. The design keeps a six-lane main carriageway for through traffic and adds two-lane service roads on each side for tractors, two-wheelers and local trips, so the two kinds of traffic never mix. New bypasses now carry the expressway around Bidadi, Ramanagara, Channapatna, Maddur, Mandya and Srirangapatna, and an 8 km elevated section lifts the road clear of the most built-up stretch. The result cut the drive to roughly 75–90 minutes, though the sudden jump in speeds also brought a rash of crashes in the first year and forced NHAI to add extra signs, speed cameras and safety barriers.
Good to know
- Cut the Bengaluru–Mysuru drive from about 3 hours to roughly 75–90 minutes.
- Part of NH 275, which continues beyond Mysuru towards Kodagu and coastal Karnataka.
- Built with bypasses around six towns along the old road.
- The main carriageway has 6 lanes, with separate service roads for local traffic.
- Includes an elevated corridor about 8 km long.
- Has 9 major bridges, 42 minor bridges, 64 underpasses and 11 overpasses.
- Two-wheelers, auto-rickshaws and tractors must use the service roads, not the main lanes.
- Built under the Bharatmala Pariyojana highway programme.
Timeline
- 2019Construction begins on upgrading the old Bengaluru–Mysuru road
- 2023Inaugurated by the Prime Minister on 12 March 2023
Key junctions
- Kengeri (Bengaluru) — the city end, near the NICE Road junction
- Bidadi — exit for the Bidadi industrial area and Wonderla
- Ramanagara — exit for Ramanagara and Channapatna, and the crossing point of the Satellite Town Ring Road
- Maddur — exit for Maddur town, famous for its maddur vada
- Mandya — exit for Mandya, the sugarcane district headquarters
- Srirangapatna — exit for Tipu Sultan's island fort and the Ranganathaswamy temple
- Mysuru Ring Road — the western end, joining Mysuru's outer ring road
Engineering highlights
- Elevated corridor — about 8 km of the expressway is raised on pillars so through traffic flies over the busiest built-up stretch
- Six town bypasses — new alignments around Bidadi, Ramanagara–Channapatna, Maddur, Mandya and Srirangapatna keep expressway traffic out of the towns
- Underpasses and overpasses — 64 underpasses and 11 overpasses let village roads, farmers and cattle cross without ever entering the expressway
On the road
Plan on 75–90 minutes, and note the two toll plazas near Bidadi and on the Mysuru side. Saturday mornings out of Bengaluru and Sunday evenings coming back are the busy times, and long weekends can be slow at the toll gates. The old roadside food stops — Bidadi thatte idli, Maddur vada, Mandya sugarcane juice — are now on the service roads or in the bypassed towns, so you have to take an exit for them. Two-wheelers and slow vehicles are not allowed on the main lanes, and the wide open carriageway tempts people into very high speeds, so watch for sudden slow traffic near the interchanges.
What’s coming next
- The next stretch of NH 275, from Mysuru toward Kushalnagar in Kodagu, has been approved for four-laning.
- NHAI is adding more safety works — extra signs, speed cameras, crash barriers and pedestrian crossings — after the crashes in the first year.
More details
- Lanes
- 6-lane main carriageway, access-controlled, with service roads on both sides
- Project cost
- ₹8,480 crore (approx.)