The Mumbai Metropolitan Region Development Authority (MMRDA) on Thursday night launched a 180-metre-long orthotropic steel deck (OSD) on the Mumbai Trans Harbour Link (MTHL) – a 22 km-long sea link that will connect South Mumbai to Navi Mumbai.
This is the longest OSD launched on the MTHL, giving a navigation space of 180 metres to ships traversing under the bridge without obstruction.
The OSD, a steel deck superstructure being used for the first time in the country, will carry the vehicular load more efficiently and improve the load carrying capacity of the bridge, as compared to a concrete superstructure. The OSD also weighs lesser than concrete girders.
