At 2,400 MT, these OSDs weigh as heavy as six large-sized aircraft and give a navigation space of 180 metres to ships traversing under the bridge without obstruction
The Mumbai Metropolitan Region Development Authority (MMRDA) Monday launched the second of the longest (180 metre) orthotropic steel decks (OSD) on the Mumbai Trans Harbour Link (MTHL) — a 22-km-long sea link that will connect South Mumbai to Navi Mumbai. The first of the 180-metre OSDs was launched earlier this year.
https://indianexpress.com/article/cities/mumbai/mmrda-launches-longest-steel-decks-mumbai-trans-harbour-link-8242654/
Source: The Indian Express
