Mumbai's Big-Ticket Flyover Projects Hit By Massive Cost Overruns, Two See Nearly 90 Per Cent Spike In Just Months: Report

Three major bridge and flyover projects in Mumbai have seen their costs balloon by a combined 66 per cent within months, fresh budget documents from the Brihanmumbai Municipal Corporation (BMC) reveal as per a report by the Indian Express.

The projects, spread across key locations including Fort, Byculla, Kurla, Ghatkopar and Mankhurd, were originally estimated at Rs 4,013 crore when tenders were floated in 2025. The revised figure now stands at Rs 6,675 crore in the BMC's 2026-27 budget. Two of the three projects have individually recorded cost escalations exceeding 90 per cent in barely four months.

The BMC attributed the surge to design changes, physical contingencies and GST.

The steepest jump has been in an 850-metre cable-stayed flyover meant to connect the Y-Bridge in Byculla with JJ Flyover. Originally pegged at Rs 805 crore in October 2025, the project now costs Rs 1,561 crore, a 94 per cent increase.

The BMC said, "We are exploring a possibility of expanding the earlier proposed alignment. The new proposal is to establish a seamless link between the upcoming cable-stayed bridge at Byculla and Lalbaug flyover, thus creating a continuous corridor between CSMT and Parel."

A 4.24-km flyover linking Kurla's Kalpana Talkies with LBS Marg in Ghatkopar has jumped from Rs 1,635 crore to Rs 3,156 crore, a 93 per cent escalation.

The BMC said the original figure reflected only construction estimates, while the revised amount includes GST, utility shifting and contingency costs.

The third project, a T-junction flyover on the Sion-Panvel Highway connecting Vashi with Ghatkopar and Mankhurd, rose 25 per cent from Rs 1,573 crore to Rs 1,958 crore.

The BMC explained the increase was due to a forced design shift. "Initially, it was proposed that the bridge would be built on piers. However, the Public Works Department didn't give us permission for piers on one side, due to which we had to adapt to a new cantilever design."

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