Dom Luis I Bridge

The Dom Luis I Bridge is an iconic symbol of Porto, captivating locals and visitors alike. Spanning the majestic Douro River, this architectural masterpiece is not only a vital transportation link but also a beloved landmark in Porto. Let’s take a look at the history behind the Dom Luis I Bridge, its architecture, and what you can expect when visiting.


The history of the Dom Luis I Bridge can be traced back to the late 19th century. It was designed by Théophile Seyrig, a talented student who learned under the renowned Gustave Eiffel.

The construction of the bridge began in 1881 and was completed in 1886, making it a testament to the engineering prowess of that era. The bridge was named after King Dom Luís I, who ruled Portugal from 1861 to 1889 and left an indelible mark on the country’s history.

The main purpose behind the creation of the Dom Luís I Bridge was to connect the cities of Porto and Vila Nova de Gaia, which were historically separate entities.

The need for a reliable and efficient transportation link was ever-increasing, and this double-decked iron bridge was the solution. Not only did it accommodate pedestrians and vehicles, but it also played a vital role in facilitating the movement of the city’s tram network. It was a true engineering marvel of its time.


The Dom Luís I Bridge is a remarkable example of engineering brilliance and aesthetic beauty. Designed by Théophile Seyrig, a student of Gustave Eiffel, the bridge features a double-decked iron structure.

This structure showcases a remarkable fusion of functionality and beauty. The upper deck caters to pedestrians, offering them a point to admire the surrounding views. The lower deck accommodates vehicular traffic, such as cars and buses.

Its arched spans, including a central arch with a span of 172 meters (564 feet), showcase the influence of Eiffel’s engineering principles. The intricate lattice ironwork adds to the bridge’s visual appeal while ensuring its stability and resilience against the strong river currents. 


Anyone can walk along the Dom Luis I Bridge, unlike many other Portuguese bridges. Walking along the upper deck provides stunning panoramic views of the city and the Douro River. The walk is only 5 minutes. You can also choose to drive through the lower deck if walking the bridge isn’t suitable for you.

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