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Quick glance: Total Estimated Cost: Rs. 17,843 croreTotal Project Length: 21.80 km Bridge Length: 18.187 km Material: Concrete & Steel Deadline: 2023 Width: 27m Lanes: 6 Status: Under Construction Chief Lender: Japan International Cooperation Agency (JICA) Owner: Mumbai Metropolitan Region Development Authority (MMRDA) Project Model: EPC (Engineering, Procurement and Construction) General Consultant: AECOM-Padeo-Dar Al Handasah-TYLIN ConsortiumThe Mumbai Metropolitan Region Development Authority (MMRDA) is developing the bridge which will connect central Mumbai and Navi Mumbai and a township located on the opposite shore of the city is also being planned. The MTHL project will provide a critical link between the two urban areas and quick access to the southern part of Navi Mumbai. It will also foster the growth and socio-economic development of the mainland and its surrounding areas. 亚博体育官网首页 to more than 12 million people, the Mumbai Metropolitan region (MMR) is heavily congested and overcrowded. With an increase in the number of people migrating to the city every year, residents and commuters in the city have been facing severe problems including housing shortages, lack of open spaces and civic amenities, and overloaded road and rail transportation infrastructure. Most parts of the city have reached a saturation point, with its peculiar geography imposing constraints for further expansion. The only location which will allow expansion is Navi Mumbai, which has already seen development in its northern half. The new link has, therefore, become a necessity to meet the traffic growth. It will reduce the distance and travel time between the two areas and help in the development of the rest of Navi Mumbai. A comprehensive transportation study conducted by MMRDA suggested that MTHL would be an efficient solution to address accommodation and traffic problems in Mumbai.The Mumbai Trans Harbour Link (MTHL) is a 22km-long sea bridge being developed over the Mumbai Harbour in the Mumbai Metropolitan Region (MMR), Maharashtra, India. When completed, the MTHL will become the longest sea link in India.Details of the Sea bridge in Mumbai The MTHL will be a six-lane expressway bridge across Mumbai Bay. Of the total length, approximately 17km will be over the sea and 5 km will be viaducts on land on either side. The bridge will start at Sewri in Mumbai and end at the Chirle area in Raigad Division. A three-level interchange is planned at Sewri, where the Eastern Freeway and the Sewri-Worli East-West connector will connect with MTHL. The MTHL will feature approach sections, interchanges, intelligence transport system (ITS) and the other amenities required for a marine bridge. The traffic conditions on the stretch will be monitored and managed from the traffic control centre with the help of CCTV cameras and related facilities installed on the stretch. Variable message signs (VMS) will also be installed to display appropriate information for the bridge users. The bridge will be equipped with noise barriers near the Sewri mudflat area and view barriers at BARC to fulfil environmental criteria. This project has been in the works since the 1990s and several attempts have been made to develop it. The project鈥檚 foundation stone was laid by Prime Minister Narendra Modi in December 2016, and construction work started in April 2018 for 3 civil packages. When completed by L&T and Tata Projects in 2023, MTHL will be the longest bridge / sea link in India. JICA, financing 85% of the MTHL project鈥檚 construction, released the first tranche of 79.1 bn ($1.22bn) in March 2017.Financing for the new marine bridge The estimated investment for the sea bridge project is Rs 178.43 bn ($2.76bn), 85% of which will be funded by the Japan International Cooperation Agency (JICA). In March 2017, JICA released the first tranche of Rs 79.1bn ($1.22bn), which is approximately 45% of the total project cost. Further, the Indian Ministry of Finance sanctioned Rs 19.2bn ($297m) for the project.Contractors involved with India鈥檚 longest sea link The MMRDA selected the consortium comprising AECOM, Dar Al-Handasah, and T Y Lin International as general consultants for the project. The consortium is responsible for helping the development authority in organising pre-bidding meetings, scrutinising bid documents, securing permissions from the government, examining concept designs, project monitoring, and ensuring the quality of work. All the studies related to the project and bid process management were handled by the consortium of Arup, CES and KPMG. The project will be implemented on an engineering, procurement and construction (EPC-Design-Build) basis in three packages. The MMRDA has shortlisted 29 contractors, including seven each for the first two packages and 15 for the third package, following the invitation for pre-qualification from prospective bidders Image Source