Chembur to Colaba, faster: Sion flyover to get two new arms to ease traffic bottleneck
The Brihanmumbai Municipal Corporation (BMC) plans to widen the Sion flyover on the Eastern Express Highway (EEH) with two new vehicular extensions to alleviate traffic congestion. The existing 1.09-km flyover, built by the Maharashtra State Roads Development Corporation (MSRDC) in 2003 for Rs 31 crore, connects EEH with Sion Circle via BA Road.
It has three lanes, but only one accommodates southbound traffic from Ghatkopar and Chembur towards Dadar. This imbalance in traffic distribution led BMC Additional Municipal Commissioner (Projects) Abhijit Bangar to predict that the new additions will significantly reduce commute times, when operational by December 2028. The upcoming 1.12 km long and 8.5 metre wide arms will run parallel to the present flyover without altering its alignment, merging directly with EEH from Sion circle.
The project's budget is Rs 125.37 crore. The flyover needed repairs since 2017 when an IIT Bombay audit revealed badly damaged bearings and expansion joints. Heavy vehicles were banned in 2019 after part of the bridge's concrete collapsed.
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