Also Read: A $4 billion project is quietly turning one remote US Air Force base into America’s primary stealth bomber hub, and the reason is the future B-21<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\nThe first package is not the whole dream. The source brief describes a broader 11.3-mile Hebbal-to-Silk Board corridor, planned around 60 ft. underground with six lanes at about 11.5 ft. wide each.<\/p>\n\n\n\n
Why traffic made this attractive<\/h2>\n\n\n\n
TomTom\u2019s latest Traffic Index ranked Bengaluru second worldwide by congestion level in 2025, behind Mexico City, with a congestion score of 74.4. TomTom said city-center trips<\/a> averaged about 5 minutes and 49 seconds per mile in regular traffic, compared with about 3 minutes and 20 seconds per mile in free-flow conditions.<\/p>\n\n\n\nIn ordinary commuter language, a 6.2-mile trip can swallow around 36 minutes. That is not an abstract figure; it is the missed dinner, the late school pickup, the driver checking the same signal again and again.<\/p>\n\n\n\n
For tech firms, airport travelers, delivery fleets, and emergency services, a signal-free bypass at Hebbal has obvious appeal. Bengaluru is a business engine, but even engines stall when the roads around them stop moving.<\/p>\n\n\n\n![\"A](\"https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/07\/bengaluru-hebbal-tunnel-road-project-1.jpg\" "\\"\\"")
As part of a $119 million initiative, Bengaluru is constructing a 1.6-mile tunnel road designed to relieve congestion at the critical Hebbal Junction.<\/figcaption><\/figure>\n\n\n\nThe environmental catch<\/h2>\n\n\n\n
A tunnel may reduce surface jams at one junction, but it does not make tailpipes disappear. Vehicles still burn fuel or draw power, ventilation still matters, and traffic that exits near another chokepoint can shift pollution rather than remove it.<\/p>\n\n\n\n
Transport researchers have a name for a familiar problem. When new road capacity makes driving faster, some people drive more, drive farther, or switch from other modes, a pattern known as induced demand. <\/p>\n\n\n\n
\n\n\nAlso Read: The world’s largest cargo plane just touched down in Florida, and what it came to pick up explains the trip<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\nOne study of U.S. urban areas found that added highway capacity can produce proportional increases in vehicle travel, and that speed gains can fade within about five years.<\/p>\n\n\n\n
That does not mean every road project<\/a> is doomed. It does mean Bengaluru\u2019s tunnel should be judged by measured results, not just by ribbon-cutting photos.<\/p>\n\n\n\nGreen groups are not convinced<\/h2>\n\n\n\n
The bigger Hebbal-Silk Board tunnel proposal has already drawn scrutiny because of possible effects on Lalbagh Botanical Garden, groundwater, stormwater drains, and tree cover. A government-linked expert review reportedly flagged major gaps in the detailed project report, including limited geotechnical data and a lack of complete groundwater mapping.<\/p>\n\n\n\n
Those concerns do not automatically prove the short Hebbal tunnel will fail, but they do show why “underground” should not be treated as “impact-free.” In a flood-prone and fast-growing city, drains, soil, aquifers, and exit ramps matter as much as lanes.<\/p>\n\n\n\n
At the end of the day, a tunnel is still part of the city\u2019s ecology. It touches land, water, air, and daily behavior.<\/p>\n\n\n\n
What drivers will notice<\/h2>\n\n\n\n
For the first phase, officials say the tunnel will use a cut-and-cover method. In practical terms, crews dig from the surface, build the concrete passage, and restore the top afterward. Think of it less like a hidden subway and more like a long, covered trench.<\/p>\n\n\n\n
The six-lane design is meant to move vehicles at up to about 37 mph, a tempting number in a city where rush-hour movement often feels like walking speed. Once complete, airport-bound drivers and those entering from North Bengaluru could see a smoother handoff around Hebbal. That is the promise, anyway.<\/p>\n\n\n\n
Construction itself will be a big part of the story. Detours, dust, noise, and local access changes can shape public opinion long before the first car enters the tunnel.<\/p>\n\n\n\n
The business case is clear<\/h2>\n\n\n\n
Bengaluru is India\u2019s technology capital, and traffic is no longer just a personal annoyance. It has become a productivity problem for companies, gig workers, suppliers, and international visitors who measure a city partly by how predictably it moves.<\/p>\n\n\n\n
\n\n\nAlso Read: India is building a road 60 feet beneath Bengaluru to bury one of the world’s worst traffic jams underground<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\nThere is also a construction-tech story<\/a> here. Underground roads need monitoring systems, lighting, fire safety, drainage, ventilation, and traffic management. Done well, those systems can make the tunnel safer and smarter than a typical surface road.<\/p>\n\n\n\nDone badly, they become a very expensive bottleneck.<\/p>\n\n\n\n
What should happen next<\/h2>\n\n\n\n
The strongest version of this project would not treat cars as the only answer. It would connect tunnel planning with buses, Metro expansion<\/a>, parking policy, ride sharing, freight timing, and better pedestrian access around stations and offices.<\/p>\n\n\n\nOtherwise, Bengaluru may build an impressive shortcut that fills up too quickly. Public traffic data before and after opening, air-quality monitoring near exits, flood-risk checks, and clear construction updates would help residents see whether the tunnel is solving a problem or moving it around.<\/p>\n\n\n\n
A tunnel can be a tool. It should not become a hiding place for bad planning.<\/p>\n\n\n\n
The official statement was published on the Bangalore Development Authority\u2019s X account<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"Can a city dig its way out of traffic? Bengaluru is about to test that idea with its first major … <\/p>\n
In ordinary commuter language, a 6.2-mile trip can swallow around 36 minutes. That is not an abstract figure; it is the missed dinner, the late school pickup, the driver checking the same signal again and again.<\/p>\n\n\n\n
For tech firms, airport travelers, delivery fleets, and emergency services, a signal-free bypass at Hebbal has obvious appeal. Bengaluru is a business engine, but even engines stall when the roads around them stop moving.<\/p>\n\n\n\n A tunnel may reduce surface jams at one junction, but it does not make tailpipes disappear. Vehicles still burn fuel or draw power, ventilation still matters, and traffic that exits near another chokepoint can shift pollution rather than remove it.<\/p>\n\n\n\n Transport researchers have a name for a familiar problem. When new road capacity makes driving faster, some people drive more, drive farther, or switch from other modes, a pattern known as induced demand. <\/p>\n\n\n\n One study of U.S. urban areas found that added highway capacity can produce proportional increases in vehicle travel, and that speed gains can fade within about five years.<\/p>\n\n\n\n That does not mean every road project<\/a> is doomed. It does mean Bengaluru\u2019s tunnel should be judged by measured results, not just by ribbon-cutting photos.<\/p>\n\n\n\n The bigger Hebbal-Silk Board tunnel proposal has already drawn scrutiny because of possible effects on Lalbagh Botanical Garden, groundwater, stormwater drains, and tree cover. A government-linked expert review reportedly flagged major gaps in the detailed project report, including limited geotechnical data and a lack of complete groundwater mapping.<\/p>\n\n\n\n Those concerns do not automatically prove the short Hebbal tunnel will fail, but they do show why “underground” should not be treated as “impact-free.” In a flood-prone and fast-growing city, drains, soil, aquifers, and exit ramps matter as much as lanes.<\/p>\n\n\n\n At the end of the day, a tunnel is still part of the city\u2019s ecology. It touches land, water, air, and daily behavior.<\/p>\n\n\n\n For the first phase, officials say the tunnel will use a cut-and-cover method. In practical terms, crews dig from the surface, build the concrete passage, and restore the top afterward. Think of it less like a hidden subway and more like a long, covered trench.<\/p>\n\n\n\n The six-lane design is meant to move vehicles at up to about 37 mph, a tempting number in a city where rush-hour movement often feels like walking speed. Once complete, airport-bound drivers and those entering from North Bengaluru could see a smoother handoff around Hebbal. That is the promise, anyway.<\/p>\n\n\n\n Construction itself will be a big part of the story. Detours, dust, noise, and local access changes can shape public opinion long before the first car enters the tunnel.<\/p>\n\n\n\n Bengaluru is India\u2019s technology capital, and traffic is no longer just a personal annoyance. It has become a productivity problem for companies, gig workers, suppliers, and international visitors who measure a city partly by how predictably it moves.<\/p>\n\n\n\n There is also a construction-tech story<\/a> here. Underground roads need monitoring systems, lighting, fire safety, drainage, ventilation, and traffic management. Done well, those systems can make the tunnel safer and smarter than a typical surface road.<\/p>\n\n\n\n Done badly, they become a very expensive bottleneck.<\/p>\n\n\n\n The strongest version of this project would not treat cars as the only answer. It would connect tunnel planning with buses, Metro expansion<\/a>, parking policy, ride sharing, freight timing, and better pedestrian access around stations and offices.<\/p>\n\n\n\n Otherwise, Bengaluru may build an impressive shortcut that fills up too quickly. Public traffic data before and after opening, air-quality monitoring near exits, flood-risk checks, and clear construction updates would help residents see whether the tunnel is solving a problem or moving it around.<\/p>\n\n\n\n A tunnel can be a tool. It should not become a hiding place for bad planning.<\/p>\n\n\n\n The official statement was published on the Bangalore Development Authority\u2019s X account<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" Can a city dig its way out of traffic? Bengaluru is about to test that idea with its first major … <\/p>\nThe environmental catch<\/h2>\n\n\n\n
Also Read: The world’s largest cargo plane just touched down in Florida, and what it came to pick up explains the trip<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
Green groups are not convinced<\/h2>\n\n\n\n
What drivers will notice<\/h2>\n\n\n\n
The business case is clear<\/h2>\n\n\n\n
Also Read: India is building a road 60 feet beneath Bengaluru to bury one of the world’s worst traffic jams underground<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
What should happen next<\/h2>\n\n\n\n