Ervěnický koridor, Railway embankment between Most and Chomutov districts, Czech Republic

The Ervěnický koridor is a 5 km railway embankment built from 520 million m³ of mining spoil between Jirkov and the Třebušice station. Its crown is 200 m wide and carries the Ústí nad Labem–Chomutov line, road I/13 and a 3.1 km diversion of the Bílina, which runs in a 4× Js 1200 mm pipeline.

Construction began in 1983 and took six months to complete. The project was built to reconnect the landscape destroyed by open-pit mining and to carry traffic over the subsided terrain.

The corridor is named after Ervěnice, a town that disappeared in the second half of the 20th century as the ČSA and Jan Šverma quarries advanced; the embankment now runs across its former site. The railway line over it is part of the Ústí nad Labem–Chomutov route, and the corridor also carries almost all utility networks between Chomutov and Most.

The best views of this embankment come from the side or below, where its true scale becomes apparent. The site is easily accessible by public transport since the railway and road run directly across it.

At its construction the dam, 150 metres high, was considered the highest railway embankment in the world. Its total cost of 1,288,289,000 crowns makes it, per metre of length, the most expensive transport structure ever built in the Czech Republic.