Pražský viadukt, Railway bridge in the Czech Republic

The Pražský viadukt is a railway bridge in Brno with massive stone arches that span over the streets of the Trnitá district. The structure consists of stone and brick with large arches as supports and stretches over several hundred meters with a width of about 30 feet (9 m).

Construction of the Brno–Česká Třebová line began in 1843, and traffic on this section of the Northern State Railway opened on 1 January 1849. The stone Pražský viadukt was put into service in 1857, crossing the Svitavský náhon and the land south of Kožená street. The line was doubled in 1856–1858, the bridge was repaired in 1928, and in 1966–1970 its western half was buried in an embankment, leaving 20 arches.

The viaduct shapes the streetscape of Trnitá and shows how the railway changed daily life in Brno. The massive stone arches below the bridge remind visitors of times when this area bustled with activity and people worked or stored goods beneath it.

You can view the viaduct from the streets below and observe the old stone arches from underneath. The best views are found when walking through the streets of Trnitá, especially near the building Malá Amerika, where some of the arches are directly accessible.

In 2020 the artist Kateřina Šedá used two arches over Vlhká street for Brnox II, a black-and-white graphic work. Ten of the twenty remaining arches were walled up with concrete and filled with fly-ash cement during the 2016–2017 reconstruction.