Atal Setu (MTHL)

Prestigious 21.8 Km Longest Sea Bridgein India of the length of the sea is 16.50 kms and land portion of 5.5 Km. WestCoastal has done 620,000 Sqm of Bridge Deck waterproofing of entire bridge in 3 packages i.e. Pkg-1 for L&T –IHI Japan, Pkg-2 for Daewoo-Tata Projectsand Pkg-3 for L&T in 11 Months anddelivered the project with best quality, safety and timeline.

WestCoastal has carried out Bridge Deckwaterproofing using Spray Applied Polyurethane Coating PitchmasticPmB.It’s a two-part hybrid Polyurethane elastomer membrane which gels in seconds toprovide a seamless, fully adhered barrier to ingress of water &contaminants.

Area: Entire length of 21.8kms (640,000Sqm) including all three packages.

21.8Km, 6-Lane elevated Highway Bridge, connecting Sewri in Mumbai to Chirle in Navi Mumbai|
Longest sea Bridge in Indix
Engineering Design by : AECOM, PADECO, Dar Al-Handasah & T.Y.Lin International
12thLonest sea bridge in the world
OSD steel decks- 70 spans Orthotropic Steel Deck technology used first time in the country. Coated with MMA Technology by WestCoastal
Concrete-Steel precast segment viaduct
Constructed by: L&T, IHI Corporation (japan), Dawoo E&C, Tata Projects Ltd.

MMA Application for OSD

A first-of-its-kind in India, MTHL Bridge has 4KM steel span section called Orthotropic Steel Decks (OSD) in the middle to allow the ships to pass. WestCoastal has carried out rapid cure spray applied system based on Methacrylate resin systems. Britdex MDP is a tough, seamless membrane with no vulnerable joints & resistant to oil, fuel etc making the surface waterproof.

It was challenging task to work on a open sea deck with controlled parameter’s such as Humidity, Due point, surface temperature of steel and required profile by abrasive Shot blasting the surface.