Chembur to Colaba, Faster: Sion Flyover gets two new ₹125-Crore arms
Chembur drivers heading to South Mumbai could soon have an easier run through Sion. The BMC will add two new arms to the Sion flyover on the Eastern Express Highway at a cost of ₹125.37 crore, with a deadline of December 2028.
The existing flyover is 1.09 km long and links the Eastern Express Highway with Sion Circle via BA Road. It has three lanes, but only one carries southbound traffic from Ghatkopar and Chembur towards Dadar, which causes a daily bottleneck.
The new arms will be 1.12 km long and 8.5 metres wide, including crash barriers. They will run parallel to the existing flyover without changing its alignment, starting at Sion Circle and merging directly with the Eastern Express Highway.
“Motorists travelling southwards to Colaba from Chembur or Ghatkopar will get a much wider connectivity”, Additional Municipal Commissioner (Projects) Abhijit Bangar says. He added that commute times would come down significantly once the arms open.
The MSRDC built the flyover in 2003 for ₹31 crore, and the BMC took it over in 2022. A 2017 IIT Bombay audit found its bearings and expansion joints badly damaged. Part of its concrete collapsed in 2019, heavy vehicles were banned, and major repairs began in 2020.
This flyover is separate from the east-west Sion railway overbridge, which the BMC rebuilt and opened last month.