Pont Saint-Thomas

Pont Saint-Thomas, Strasbourg (Alsace, France) is a cast-iron arch bridge spanning the Ill river, one of the enduring landmarks of Strasbourg's riverside old town. It links the Finkwiller district with Grande Île, the island that forms the historic heart of the city and holds UNESCO World Heritage status. The bridge takes its name from the neighbouring Saint-Thomas church, standing right beside it.

Where exactly is the bridge located?

Pont Saint-Thomas crosses the main branch of the Ill just south of Grande Île, in a stretch of Strasbourg threaded with bridges and canals. A short walk from Strasbourg Cathedral toward the Petite France quarter brings visitors straight to this spot. On one side sits Finkwiller, once a district of tanners and craftsmen; on the other, the dense fabric of the old town.

What is the history behind this crossing?

A bridge has stood at this location for a very long time, with the earliest documented reference dating back to 1197. A wooden structure occupied the site as late as the 15th century before eventually giving way to sturdier materials. The bridge seen today, built from cast iron, dates from 1841. It was constructed by the Dietrich brothers' works in Reichshoffen, overseen by Nicolas Cadiat, following a design by engineer Antoine-Rémy Polonceau — the same engineer behind the Pont du Carrousel in Paris.

Why is this bridge architecturally significant?

The design relies on a single wide arch, which allowed engineers to avoid placing a central pier in the riverbed of the Ill — an impressive feat for its time. It ranks among the oldest surviving cast-iron bridges in France and is one of only two metal bridges predating 1850 still standing in the country. The bridge was listed as a historic monument in 1995, and in 2008 it underwent a full renovation covering both the deck and the ironwork.

What else is worth seeing nearby?

Its position beside Grande Île makes the bridge a natural starting point for exploring central Strasbourg — the timber-framed houses of Petite France, the old tanners' canals, and views of the cathedral from various spots along the Ill. The Saint-Thomas church itself, which gave the bridge its name, is another essential stop in this part of the city.

Frequently Asked Questions

Can you cross Pont Saint-Thomas by car? The bridge still functions as a regular city crossing and remains in daily use, though its protected heritage status means traffic in this part of Strasbourg is limited and shaped around the historic surroundings.

Where does the bridge's name come from? It is named after the adjoining Saint-Thomas church, next to which a crossing has stood for centuries; in Alsatian, the bridge is sometimes called Thomasbruck.

Is this the oldest bridge in Strasbourg? The current structure dates from 1841, but a crossing has existed at this exact spot since at least 1197, making it one of the oldest cast-iron bridges still standing in France.

How do you get to the bridge? Pont Saint-Thomas sits right in the centre of Strasbourg, within walking distance of the cathedral and the Petite France quarter, so it's most easily reached on foot while exploring Grande Île.