MUMBAI, June 25 -- MUMBAIThe Brihanmumbai Municipal Corporation (BMC) has set firm deadlines for two critical infrastructure projects in Mumbai - December 15 for the Bellasis flyover from its earlier April 2026, and May 31, 2026, for the Sion flyover. These timelines were confirmed by the additional municipal commissioner (projects), Abhijit Bangar, who directed all departments to expedite construction and ensure timely delivery. The Sion flyover is undergoing reconstruction under the BMC's supervision. Bangar inspected the site on Monday and highlighted key timelines. By August 31, the pedestrian foot overbridge on the southern side, which the railway department is currently constructing, is to be completed. The girder installation will commence in two phases -- for the northern segment in November and the southern segment in January 2026. Critical components such as the western approach road, which includes an underpass on LBS Road, have seen significant progress. Accordingly, construction of another underpass would begin on October 1 with the connecting roads to Dharavi and LBS Marg completing by March 2026. The railways is due to complete its work by May 15, 2026. The approach networks will then be handed over to BMC. After this, the remaining eastern approach road is expected to be ready within 15 days. The Bellasis flyover, which connects Tardeo to Nagpada and Mumbai Central station, is also under accelerated development. Bangar said encroachments obstructing the project, which includes 13 unspecified structures, are being removed after allocating alternative housing to those residing there. A boundary wall of a nearby society impeding the slip road will be cleared. By August 10, assembly and girder installation are expected to conclude. Concreting and all other railway-related tasks are slated to be completed by September 14. Approach roads will then be finalised, leading to the entire flyover's completion by December 15 this year....