The total length of the Mumbai Trans Harbour Link (MTHL) bridge is 21.8 km; 16.5 km of that is over the sea and 5.5 km is over land.
It will connect Sewri to Chirle in a mere 20 minutes, currently the travel time stands at over 2 hours
The Atal Setu has 6 lanes (3+3 lanes) plus 1 emergency lane on both sides.
There are 7 Orthotropic Steel Decks (OSD) that span between 90-180 m, a 1st for India.
There are 3 interchanges at Sewri in Mumbai, Shivaji Nagar, SH-54 in Jasai and at Chirle on NH-348.
The speed limit on the Atal Setu is 100 kph.
Mumbai Trans Harbour Link road will be inauagurated by PM Modi for public use on January 12, 2024
For spans more than 60 metres long, the Orthotropic Steel Deck (OSD) is used, where a steel deck is used for strength and steel ribs are used to keep the structure ‘light’, instead of solid steel beams
The self weight of the bridge, the weight of the bridge with no cars on it, is 80 percent of the total
Japanese banks provided most of the finance for the bridge (it costs roughly INR 18,000 crore)
The Atal Setu has been tested for seismic loads experienced during earthquakes, and the bridge has been built to handle over 1.5 times the most intense earthquake likely to take place in this region.
The bridge is also safe for wind speeds of up to 150 kph (wind tunnel tests were done in Korea)
A sum of INR 330 crore was mandated and set aside for the environment management plan, including plantation of mangroves, relocation of the trees, air pollution monitoring, water pollution monitoring and monitoring of flamingos for 10 years
Measuring 100 metres by 60 metres, the largest barge used in construction is as big as a football field, helping carry steel and concrete sections that weigh upwards of 4,000 tonnes.
Also used to help erect the structure are temporary bridges made of steel pipes. The cost of the temporary bridges alone was INR 500 crore
5-7 percent of the toll is still expected to be collected in cash.
A toll of INR 500 was proposed by the MMRDAOne-way toll has now been fixed at INR 250 by the government, with return toll standing at INR 375A daily pass costs INR 625 and the price for a monthly pass is set at INR 12,500
For greater security, CCTV cameras are installed every 250 metres