The Mumbai Trans Harbour Link (MTHL) is a 21.8-km sea bridge connecting Sewri and Chirle in Navi Mumbai, set to be India's longest bridge upon completion in November 2023, with a projected cost of ₹17,843 crore. This infrastructure project aims to significantly reduce travel time between Mumbai and Navi Mumbai to 15-20 minutes and includes advanced features such as toll systems and intelligent transport technologies. The project is supported by the Japan International Cooperation Agency (JICA) and is expected to enhance connectivity and economic development in the region.

1. Mumbai Trans Harbour Link : Specifications,
Commencement, Cost
The Mumbai Trans Harbour Link (MTHL), which runs along the JNPT route, would link Sewri and Chirle in
Navi Mumbai.
With a population of more than 1.24 crore, Mumbai is India's financial hub and significantly relies on
public transit and infrastructure for connection. Mumbai is getting a makeover when it comes to
infrastructural development as the city expands. The construction of the 21.8-km-long Mumbai Trans
Harbour Link, which will link Sewri to Chirle in Navi Mumbai via the JNPT Road, is an example of such
infrastructure development. The MMRDA (Mumbai Metropolitan Region Development Authority) is
responsible for creating the sea link. The longest bridge in India is this one.
Mumbai Trans Harbour Link: Prepare for the monsoon
On June 8, 2023, MMRDA Commissioner Sanjay Mukherjee paid a visit to the MTHL facility. Mukherjee
reportedly stated, "The majority of the MTHL project lies within the sea limits," according to an article in
the Indian Express. Throughout the monsoon, there will likely be numerous severe winds and lots of
rain. We are making sure that everything is ready before the monsoon since this bridge is in the crucial
stage of construction. so that the continuing activities may be carried out without issue. I am confident
in saying that the MMRDA staff is well equipped and prepared to function effectively in all weather
circumstances after carefully reviewing the plans.
Test drive the Mumbai Trans Harbour Link

2. On May 24, 2023, the Mumbai Trans Harbour Link—the longest bridge in India—was inspected by the
chief minister of Maharashtra and the deputy chief minister of that state, Devendra Fadnavis.
Opening of the Mumbai Trans Harbour Link
According to a ToI article, the whole deck of India's longest bridge would be finished by May 25 or 26,
2023, at which point cars will be able to use the MTHL. The travel time from Sewri to Chirle will be cut in
half to 15 to 20 minutes thanks to the MTHL. After the MTHL is completed and before the monsoon
season, MMRDA will concentrate on waterproofing, paving and building crash barriers at the sea
connection. Additionally, MMRDA will begin by building the toll infrastructure, lampposts and CCTV
cameras. Artificial intelligence (AI)-based cameras will be deployed to keep an eye on the
MTHL.Authorities can tow the automobiles using the emergency lane in the event of breakdowns.
Mumbai Trans Harbour Link
On January 11, 2023, Mumbai Trans Harbour Link MMRDA successfully launched the first Orthotropic
Steel Deck (OSD) with a length of around 22 km in package-2 of MTHL. 180 metres long and 2,300 metric
tonnes long, the first OSD of package-2 between Mumbai and Navi Mumbai is the longest. Out of the 32
OSD spans that the MTHL package-2 contains, MTHL has already deployed 15.
90% of the construction on the Mumbai Trans Harbour Link was finished by December 2022. Work had
begun on the interchange loops and connecting ramps that link surrounding roadways to the main
bridge.
The Mumbai Trans Harbour link, which will be the longest bridge in India, will be a six-lane motorway
that begins at Sewri, crosses the Thane creek, and ends at Chirle close to Nhava Sheva. The King Fahd
Causeway in Saudi Arabia, which is 26 km long, and the Hangzhou Bay Bridge in China, which is 36 km
long, are examples of comparable designs and plans to the Mumbai Trans Harbour Link. Upon
completion, MTHL would be India's longest sea bridge and can accommodate 70,000 cars per day.
The first package, which is being constructed by L&T and IHI Corporation, is 10.38 km long and connects
Sewri to Thane Creek. The second package, which is being constructed by Tata Projects and Daewoo
E&C, is 7.807 km long and runs from Thane Creek to Shivaji Nagar. At Chirle, Navi Mumbai, the third
package, which is 3.613 km long and being built by L&T, would connect the Mumbai Trans Harbour link
with state roads 52 and 54 and with national highway 4B.
The Intelligent Transport Systems (ITS) package, which comprises the Toll and Transport Management
System and the Equipment Installation for the Project, is the fourth component of the Mumbai Trans
Harbour Link.
Facts about the Mumbai Trans-Harbour Link
 The longest bridge in India, the MHTL, is made of steel bars weighing 1,70,000 metric tonnes,
which is equivalent to 17 Eiffel towers.

3.  The pile liners utilised are around 35 kilometres long and 35 times taller than Burj Khalifa.
 6 times as much concrete was needed to build the Statue of Liberty, or 9,75,000 cubic metres.
Constructing the Mumbai Trans Harbour Link cost
Eknath Shinde, the chief minister of Maharashtra, declared that the MTHL will be operational by
November 2023. The Mumbai Trans Harbour connection will be India's longest sea connection and
bridge when it is finished in 2023. The Mumbai Trans Harbour Link is expected to cost about Rs 17,843
crore to build. The Mumbai Trans Harbour Link was initially planned to be constructed using a PPP
model, but the MMRDA eventually revised the plan and decided to use an EPC model, or engineering,
procurement, and construction. The Japan International Cooperation Agency (JICA) is responsible for
funding around 85% of the project's total cost. On March 16, 2023, Tanaka Akihiko, president of JICA,
together with other representatives, went to examine the building of MTHL, the longest sea bridge in
India.
India's MTHL project is a significant civil undertaking. For more than 30 years, the MTHL project idea was
under discussion. Currently, MMRDA is carrying out this project with the assistance of the government
and financial assistance from JICA. The new entrance to the Mainland will be the six-lane, access-
controlled Mumbai Trans Harbour Link (MTHL), which would connect Sewri in south Mumbai with Chirle
in Navi Mumbai. After this project is finished, Mumbai won't be regarded as an island city. MMRDA is
committed to provide secure, top-notch infrastructure to its inhabitants, according to S.V.R. Srinivas,
IAS, the agency's metropolitan commissioner.
Features of the Mumbai Trans Harbour Link
The Mumbai end of the Mumbai Trans Harbour Link will include a three-level interchange that will link
to the Eastern Motorway and the Sewri-Worli connector, in accordance with the concept of the project.
On the Navi Mumbai end of this longest bridge in India, there will be an interchange at Shivaji Nagar and
Chirle.
A four-kilometer steel span will be built in the centre of the concrete Mumbai Trans Harbour Link to
make it easier for ships to get to the JNPT beneath the Mumbai Trans Harbour Link. The Bhabha Atomic
Research Centre (BARC), a refuge for migrating birds and flamingos, will also feature visual and noise
barriers as part of the Mumbai Trans Harbour Link.
The Mumbai Trans Harbour Link would also have facilities like changeable message signs and an
intelligence transport system (ITS), which are crucial for a sea link. On the Mumbai Trans Harbour Link,
the top speed restriction will be limited to 100 kmph. The Mumbai traffic control centre will use CCTV
cameras to handle traffic on the Mumbai Trans Harbour Link.
There will be a bird viewing station on the Mumbai Trans Harbour Link where you may see flamingos
and other migrating birds. For the purpose of moving supplies and project workers, the MMRDA
constructed a temporary bridge that spans 5.6 kilometres; this bridge will eventually be turned into a

4. platform for birdwatching. The MMRDA will benefit from this since it will avoid having to pay to
dismantle the bridge.
Toll on the Mumbai Trans Harbour connection
According to reports, the MMRDA proposed toll charges of Rs 175 for automobiles, Rs 265 for LCVs, Rs
525 for HCVs, and Rs 790 for multi-axle trucks for the Mumbai Trans Harbour Link in 2012. The Mumbai
Trans Harbour Link's completion and operation date will be announced closer to the time when JICA, the
project's major investor, has proposed an increase in toll charges due to an increase in construction
expenses. The MMRDA intends to collect tolls until 2045 in order to recoup its investment in the
Mumbai Trans Harbour Link.
Purchasing land for the Mumbai Trans Harbour Link
Nearly 130 hectares of land are needed for the building of the Mumbai Trans Harbour Link, of which
CIDCO has donated 88 hectares. The MMRDA will pay owners for the remaining land as it is private
property. The Mumbai Port Trust will provide over 27 hectares of land to the MMRDA.
Benefits of the Mumbai Trans Harbour Link
 A different route between Mumbai and Navi Mumbai will reduce travel time between Navi
Mumbai and Mumbai city and would help the city become less congested.
 Positive effect on the real estate market in Navi Mumbai.
 Improved communication between the JNPT port and the Mumbai Port Trust.
 Access to the Mumbai–Pune Motorway.
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