Jamuna Bridge

Stand on the western approach and listen. There is a low, steady hum of trucks and buses, rising and falling as each vehicle meets the joints in the deck. Below it, if the wind is right, you can hear water moving against concrete. The air smells of river silt and diesel. Ahead of you, a long grey line of road runs out across the water. It goes on so far that the far bank seems to sit in a light haze.

This is the Jamuna Bridge, on the Sirajganj side of one of the largest rivers in South Asia. For many years its official name was the Bangabandhu Jamuna Multipurpose Bridge, in honour of Sheikh Mujibur Rahman, the founding leader of Bangladesh. In recent years the name has changed back to the simpler Jamuna Bridge. Most people here never stopped calling it after the river. And the river, as you will hear, is the real subject of this story.

The Jamuna is the name Bangladesh gives to the lower course of the Brahmaputra. That river begins far to the north, in Tibet, and crosses India before it enters this country. By the time it reaches Sirajganj, it carries an enormous load of water and sediment. It is a braided river — that means it does not run in one channel. It splits into many channels around shifting sandbanks, called chars, and those channels move from season to season.

For most of history, this river divided Bangladesh in two. The northwest of the country sat on one side, and the capital, Dhaka, sat on the other. To cross, people and goods took ferries. A crossing that looks simple on a map could take many hours. In the monsoon, with high water and strong currents, it could take much longer. Farmers in the northwest found it hard to get crops to the big markets in the east.

The idea of a fixed crossing was discussed for decades. Engineers knew the problem was not only length. The bigger problem was the river itself. How do you build a permanent structure across a river that refuses to stay in one place? The answer took years of study, and help from international lenders. The World Bank, the Asian Development Bank and Japan all helped to fund the project. The main construction work was carried out by the South Korean company Hyundai.

The bridge opened in June 1998. It runs for nearly five kilometres, roughly 4.8 kilometres from end to end. When it opened, it was among the longest bridges in South Asia. It connects Sirajganj District on the west bank with Tangail District on the east bank. In practical terms, it connects the northwest of Bangladesh directly to Dhaka by road, for the first time.

Here is something many visitors miss. Much of the engineering effort here is not on the bridge at all. Before the bridge could stand, engineers had to narrow and guide the river. They built large embankments on both banks, called guide bunds, to push the main flow of water through the bridge opening. Think of them as long arms that hold the river in place. Without them, the Jamuna could simply cut a new channel around the end of the bridge and leave it standing over dry sand.

The word multipurpose in the old name was not decoration. This bridge carries far more than cars. It was designed to carry a railway line, a natural gas pipeline, high-voltage power lines and telecommunications cables. So the gas that heats kitchens in some northwestern towns, and electricity moving between the two halves of the national grid, may travel across this same structure. One crossing, many lifelines. That is the second surprise for many people who drive across without a second thought.

The railway part of the story is more complicated. Over time, inspectors found cracks in parts of the structure. Trains were made to slow down while crossing, which reduced how useful the rail link could be. Bangladesh decided to build a separate, dedicated railway bridge across the Jamuna, running parallel to this one. That newer rail bridge opened in 2025. From certain points near the river, you may be able to see both structures — the older road bridge and its younger rail companion.

Now look at the river below, if you can find a safe spot near the banks. The colour of the water changes through the year. In the dry season, you may see wide pale sandbanks with narrow channels between them. In the monsoon, the water spreads out, brown and fast, and many of those sandbanks disappear. People live on some of the chars. They farm, fish and move by small boat, and their homes can be lost when the river shifts.

On both sides of the bridge, the landscape is flat and green. Rice fields, jute, small villages and tea stalls line the roads. On the Sirajganj side, the area near the bridge approach has become a place where local families come in the evening. They walk along the embankments, eat snacks from vendors, and watch the light fall across the water. Sirajganj itself has long been known for its river trade and its handloom weaving, and you may see woven cloth sold in local markets.

It is worth thinking about what this bridge changed. Journeys that once depended on ferry schedules and weather became a drive of a few minutes across the water. Buses from the northwest to Dhaka now run day and night. Trade, migration for work, and family visits all became easier. The bridge did not stop the river from flooding or moving. But it made the country feel more connected, and for many people in the northwest, that difference was felt in daily life.

Before you leave, take one more look along the deck. Watch a heavy truck move out over the water and grow small against the haze. Notice the guide bunds holding the bank, the boats working between the sandbanks, and the long row of piers standing in the current. Then listen again — the hum of traffic above, the water below. Two kinds of movement, held together here by concrete, steel and a great deal of patient engineering.