Erasmusbrug

Feel the deck under your feet. When a tram rolls past, a faint tremor runs through the steel and up into your shoes. The wind comes straight off the river here, carrying the smell of water and diesel from the barges below. Above you, a white pylon bends against the sky, and dozens of cables fan down from it like the strings of a harp. This is the Erasmusbrug, the Erasmus Bridge, and you are standing on the line that ties Rotterdam together.

The river under you is the Nieuwe Maas, the New Meuse. For centuries it was both the reason for Rotterdam and the thing that split it. The north bank held the old city centre. The south bank was a working world of docks, warehouses and harbour neighbourhoods. Crossing from one side to the other often felt like a journey between two different towns. This bridge was built in large part to end that feeling.

The design came from the Dutch architect Ben van Berkel and his studio, now known as UNStudio. The bridge opened in 1996, and Queen Beatrix performed the ceremony. It is a cable-stayed bridge, which means the deck hangs from cables anchored to a single tall pylon, rather than resting on a long row of supports in the water. That choice left the river open for shipping, which matters a great deal in one of Europe's great port cities.

Now look up at that pylon. It is around 139 metres tall, and it does not stand straight. It leans and then kinks, with an angle partway up. Rotterdammers saw the shape and gave the bridge a nickname almost at once: De Zwaan, The Swan. Once you hear it, the image is hard to lose. The pylon is the long bent neck. The white cables are the feathers. Look at it again from the riverbank later, and see whether the swan appears for you too.

Here is a detail many visitors miss. The bridge is not one single structure. At the southern end, there is a section that can lift. It is a bascule bridge, a type of drawbridge where a heavy span tilts upward on a pivot. When a ship too tall for the fixed deck needs to pass, traffic stops and that span rises into the air. It is often described as one of the largest and heaviest bascule spans in Western Europe.

In total, the bridge runs for roughly 800 metres from bank to bank. Walk it end to end and you will notice how many kinds of traffic share the space. There are lanes for cars, tracks for trams, a wide cycle path and pavements for people on foot. This is a very Dutch arrangement. Bicycles are not an afterthought here. Watch how quickly the cyclists move, and keep to the pedestrian side when you stop to take a photograph.

The name honours Desiderius Erasmus, the scholar born in Rotterdam in the fifteenth century. Erasmus was a humanist, which means he championed learning, reason and the study of classical texts. He wrote with sharp wit about the follies of powerful people, and he became one of the most widely read writers of his age. Rotterdam is proud of him. His name appears on the university, and now on the structure that carries the city across its river.

The bridge also carries a story of engineering trouble. Soon after it opened, strong winds caused some of the long cables to vibrate in a way the designers had not expected. Rain and wind together can make slender cables move, and these moved enough to raise concern. Engineers responded by fitting dampers, devices that absorb that motion. If you look closely at the lower ends of the cables, you may spot the extra hardware that was added to calm them.

To understand why this bridge means so much to the city, you need to know what happened in May 1940. German bombing destroyed much of the old centre of Rotterdam. In the decades that followed, the city chose not to rebuild its past brick for brick. Instead, it became a place for bold, modern architecture. The Swan belongs to that spirit. It was built to look forward, not backward, and it has become a symbol of the city that rose again.

Turn toward the south bank. This area is the Kop van Zuid, a former harbour district that was redeveloped as the bridge went up. Look for the old building with green copper towers by the water. That is Hotel New York, once the headquarters of the Holland America Line. From these quays, many thousands of emigrants left Europe for a new life across the Atlantic. Today the shipping offices are gone, and tall towers stand where cargo once waited.

One of those towers is De Rotterdam, designed by the office of the Rotterdam-born architect Rem Koolhaas. It looks like several stacked blocks, slightly shifted against one another. Around it, glass and steel rise along the waterfront in a skyline that is unusual for the Netherlands, a country better known for low brick houses and gabled canals. From the middle of the bridge you can see how the river works as a stage for this architecture, with every building turned toward the water.

If you come back after dark, the bridge changes. Lights wash over the pylon and the cables, and the reflection runs out across the river surface. The swan becomes a pale shape floating above black water. Over the years the bridge has also hosted large public events, and in 2010 cyclists in the Tour de France raced across it when the race began in Rotterdam. On an ordinary evening, though, it is the quiet flow of trams and bikes that holds the eye.

Before you move on, pause near the middle of the span. Look east, upstream, and you will see the red Willemsbrug, an older bridge with a very different character. Look west, and the river widens toward the port and, far beyond, the sea. Ships, water taxis and small tour boats pass beneath you. Each of them is part of the same working river that shaped this city long before any swan rose above it.

So take one more look up at that bent white neck against the sky. Listen to the hum of tyres on the deck and the soft rattle of the next tram arriving. Feel the wind pull at your jacket. As you walk away, toward the old centre or the southern quays, glance back once or twice. The bridge looks different from every angle... and from almost anywhere in Rotterdam, the swan is still watching over the river.