Mumbai Flyover: Viral Video Exposes Design Flaw as 4-Lane Road Narrows to 2 Lanes Mid-Air in Mira-Bhayandar

Mumbai's newest flyover has gone viral for all the wrong reasons. A widely shared clip, sarcastically captioned "Engineering marvel at its best," shows the ₹100-crore double-decker flyover in Mira-Bhayandar starting off as a four-lane stretch before abruptly narrowing to just two lanes mid-air.

This flyover was supposed to make life easier as part of Metro Line 9. People expected it to fix traffic, not make it worse. Instead, everyone's calling it a disaster. Words like bottleneck, death trap, and sky jam are everywhere. With the opening just weeks away, people can't stop talking about how risky it looks, especially after dark.

That video is everywhere, along with a flood of questions. How are drivers supposed to handle four lanes merging into two, and that too so suddenly? Why did the Mumbai Metropolitan Region Development Authority (MMRDA) sign off on something that looks this chaotic, especially with that kind of budget? The conversation flipped fast-from the flyover saving time to possibly costing lives.

People are furious online. Some warn that drivers might not even realize the lane drop until it's too late. X and Facebook are packed with angry locals who think officials cared more about rushing the project than making it safe.

A 4-lane flyover in Mira-Bhayandar suddenly narrows into just 2 lanes. This double-decker flyover is a part of the Metro Line 9 project by JKumar and is set to be inaugurated in February.

Is this how @MMRDAOfficial designs “infrastructure”?

How did this design get approved? 🤷🏻 pic.twitter.com/ZNfwi1Yf9W

— Gems of Mira Bhayandar (@GemsOfMBMC) January 26, 2026

@DealsDhamaka summed it up: "Traveled the world, but never seen this-a four-lane flyover turning into two lanes in the air. How?" Someone else joked, "I love this new way by Mira-Bhayandar Municipal Corporation to slow down cars. Car companies can test here."

Now everyone's calling it a funnel or a traffic jam in the sky, and they're wondering-did anyone bother to check the safety? How does a ₹100-crore project lose half its lanes halfway through?

The MMRDA tried to explain, blaming land issues and the Metro Line 9 pillars, but nobody's buying it. The MMRDA explained they're building this thing in stages. Right now, two lanes are open for traffic going to Bhayandar East. They'll add the other two lanes for Bhayandar West later. Since the Bhayandar East part is up first, the road goes from four lanes to two. The outside lanes are saved for later when they go over the Western Railway line.

Near Golden Nest Circle, where five roads meet, they built a flyover with the metro and some slip roads to help with the heavy traffic. After that, the road gets smaller, so they made a flyover with one lane each way and ramps to keep traffic moving towards Railway Phatak Road.

The flyover does not “suddenly narrow.” The transition from 4 lanes to 2 lanes is not a design flaw, but is based on available road width constraints, and future network planning.

As per planning, the flyover has been designed with two lanes for Bhayander East and future… https://t.co/hZrsBl9SAR

— MMRDA (@MMRDAOfficial) January 27, 2026

They've added stuff to make it safer, like rumble strips, signs, and barriers. They're also talking to the traffic police before they open it up. They've also planned for widening the road in the future. The MMRDA said they're working on that with MBMC after getting the go-ahead.

However, Engineers and planners are saying, even if the road has to narrow, you can't just do it all at once-it should be gradual.

This flyover was meant to be a showpiece, carrying cars and the metro side by side. Now, all anyone talks about is the lane mess. People in Mira-Bhayandar, already tired of years of chaos, feel like the jam just moved up into the sky. With the opening coming up, they're desperate for clear signs, lights, anything to keep drivers safe.

Big question: Does this flyover even help? Experts say squeezing four lanes into two just creates jams, especially during rush hour. Planners are frustrated. This kind of project should be thinking ahead, not cutting corners that create bigger problems. As construction wraps up, everyone's watching to see if the government or the MMRDA will actually listen.

When it opens, the flyover should really help with traffic in Mira-Bhayandar, even though people are still arguing about how it looks online.