Mumbai: The Mumbai Trans Harbor Link (MHL) – India’s largest sea bridge to come – entered the historical milestone on Monday.
The 22km Nhava-sewri link has started one of the most complex construction activities with the first erection of the orthotropic deck deck deck (OSD) in the Package-II provided to the Project of Tata Ltd.-Daewoo JV.
This second package involved the construction of a 7.88km long bridge in Mumbai Bay, including the exchange of Shivaji Nagar in Navi Mumbai.
Orthotropic steel deck is a resourceful steel superstructure or reinforced transversely and longitudinal which will bring the vehicle load more efficiently between three panels and increase the carrying capacity of the bridge load compared to concrete construction for the same range.
The OSD superstructure steel deck has a lower weight than concrete or composite debate and a longer range at 180m can be designed and built using OSD.
The Golden Gate Bridge in San Francisco or Lions Gate Bridge in Vancouver has similar spans.
“OSD is the ideal solution that remembers the condition of the MTHL site (navigation channel, release channel) and a longer dock to settle.
It is also more cost-effective than fixed cable or suspension bridge,” Srinivas said when talking to TOI.
Steel ranges are made at the fabrication workshop facilities located in Japan, South Korea, Vietnam, Taiwan, Myanmar, etc.
Shipping has been made for the first OSD to allow faster construction work and activities in places related to the deck.
Loading of the final assembly was carried out in the second two weeks of December 2021 and increased / erecting the superstructure in place was carried out in place on January 3, 2022.
“Aqua Float Barge 330 is used for heavy OSD transportation.
This is a flat barge that can be given a refinerable exhaust has a weight of 2800 MT with a length of 100.58 m and area of 36.57 m.
It can bring a weight of 15 t / m2.
It was used to transport the OSD range to the sea pier (No.
MP 181 for MP 182), “Officials showed when asked how heavy material It is transported to the site.
Srinivas has called it a ‘Pride Moment for India and MMRDA’.
“This is an important milestone in the history of state engineering.” MTL under construction is a 6-lane bridge with about 16.5 km above the sea and about 5.5 km from land on land on both sides.
This link has an exchange at Sewri in Central Mumbai, Shivaji Nagar in Mumbai Bay and NH-4 B in Chirle, Navi Mumbai.
Mumbai Trans Harbor (MHL) link has been identified as an important infrastructure to increase connectivity between Mumbai and Navi Mumbai and continue economic development in the Mumbai Metropolitan region of Mumbai.
The project costs are Rs 17,843 crores and 80 percent work works until now and the whole project is around 65 percent complete.
This project is expected to be completed in 2023.
MTHL will display the approach, exchange, intelligence transportation system (ITS) and other facilities needed for the sea bridge.
Traffic conditions on stretches will be monitored and managed from the traffic control center with the help of CCTV cameras and related facilities installed on stretches.
First of 70 spans for mthl launched
