MUMBAI is one of the world’s most congested cities. A simple commute here can mean spending hours stuck in traffic or on overcrowded trains. To tackle this, India is taking on one of its most ambitious infrastructure projects yet.

To build a new eight-lane highway along the coast, Mumbai is reclaiming land from the sea, digging underwater tunnels and constructing a roadway on stilts.“These are intended to be spectacles, monumental achievements that residents can take pride in and identify with,” University of Pennsylvania Professor Nikhil Anand said.

But for all its ambition, the project has faced just as much criticism, protest and legal challenges.