Howrah Bridge

Listen first. Before you look up at the steel, listen to the sound. Car horns, bus engines, the bells of cycle rickshaws, the slap of sandals on the walkway. Porters move past with baskets balanced on their heads. Below you, the brown water of the Hooghly River slides toward the sea. Above you, a grey lattice of steel rises into the haze. You are standing on Howrah Bridge, and it carries one of the heaviest flows of people of any bridge on Earth.

This bridge joins two cities. On the west bank is Howrah, with its great railway station. On the east bank is Kolkata, the old capital of British India. For generations, millions of travellers arrived by train at Howrah. They then had to cross this river to reach the city itself. So the bridge is more than a road. For many people, it is the front door of Kolkata, and the first thing they remember.

Before this steel bridge, there was a very different crossing. In the late nineteenth century, a floating pontoon bridge spanned the river here. It rested on boats, and it rose and fell with the tide. Sections had to open to let ships pass, which stopped the traffic on land. As the port grew and the city grew, that old crossing could not keep up. Engineers began to plan something permanent, something that would leave the river open below.

That last point shaped everything you see. The Hooghly was a working river, full of ships and barges. The authorities did not want columns standing in the water to block them. So the engineers chose a cantilever design. A cantilever is a beam supported at one end, reaching out over empty space. Two great arms extend from towers on each bank. In the middle, a suspended section links them together. The result is one long, open span over the water.

That main span is roughly four hundred and fifty metres long. When the bridge opened, it was among the longest cantilever spans in the world. Look at the two main towers. They carry almost the full weight of the structure, the deck, and all the traffic on it. Each arm balances against the other, a little like two people leaning together for support. Nothing touches the river between those towers.

Here is the first detail most visitors miss. The bridge was built with rivets, not nuts and bolts. Workers heated each rivet until it glowed, then hammered it into place by hand. As it cooled, it shrank and gripped the steel plates tightly. Stand near one of the beams and look closely. You can see rows of round rivet heads, hundreds upon hundreds of them. Every one was placed by human hands, often high above the water.

The steel itself has an Indian story. Most of it was produced by Tata Steel, an Indian company. At the time, it was a significant moment. A structure of this scale in colonial India was built largely from steel made in India. The work was carried out by Braithwaite, Burn and Jessop, a construction company based in the region. The bridge was built during the years of the Second World War, when steel was scarce and in high demand.

That war also explains the quiet way the bridge opened. It began carrying traffic in 1943. There was no grand ceremony. The war had come close to eastern India, and the authorities were careful. A great public celebration on a large, visible target was not considered wise. So the bridge simply opened, and people started to walk and drive across. It has hardly paused since.

The bridge also has a second name. In 1965, it was officially renamed Rabindra Setu, after Rabindranath Tagore. Tagore was a poet, writer, and composer from Kolkata. In 1913, he became the first non-European to win the Nobel Prize in Literature. Setu simply means bridge. You may see the new name on official signs. But ask almost anyone in the city for directions, and they will still call it Howrah Bridge.

Here is the second surprise, and it is a strange one. Over the years, engineers found that the steel was being damaged by people and by birds. Many people chew tobacco and spit as they walk. That spit is acidic, and it slowly ate into the steel at the base of the hangers. Bird droppings caused damage too. The port authority, which looks after the bridge, added protective covers to shield the most exposed parts. Watch where you step, and you will understand why.

Now look down, toward the Kolkata bank, just south of the bridge. That is Mullick Ghat, one of the largest flower markets in the region. Early in the morning, it fills with heaps of orange and yellow marigolds. Sellers string garlands, shout prices, and carry sacks of petals on their heads. The air carries the smell of flowers and river mud together. Nearby, people bathe and pray at the river steps. It is everyday life, carried on in the shadow of the steel.

Time changes the bridge in a simple way. In the morning, the river mist softens the grey lattice into a pale outline. At midday, the light is hard and flat, and the steel looks heavy and plain. In the evening, the bridge is lit up, and its shape glows against the dark water. Downstream, you may also see the cables of Vidyasagar Setu, a newer bridge. It was built to ease the pressure on this old crossing.

Before you move on, pause by the rail for a moment. Feel the deck tremble slightly as a heavy bus passes. That small movement is normal for a steel bridge, and it has carried this load for more than eighty years. Look at the faces around you. Office workers, students, porters, and families, all crossing the same river. As you walk away, turn back once. Notice how the towers frame the sky, and how the crowd never stops moving.