This article lists tunnels in Bulgaria by type. The longest railway tunnel is Koznitsa, at , and the longest road tunnel is Zheleznitsa, at .
Railway tunnels The following is a list of the railway tunnels in Bulgaria longer than . It does not include planned, abandoned, or unfinished tunnels. The tunnels of the Sofia Metro are not included either.
Tunnel Length (m) Date of opening Coordinates 1962A pair of tunnels; the shorter one – 440.30 m – was built in 1897. 1951 1951 1950 1950 1948 1913 1913 1913 1913 1911 1911 1911 1930 1943 1943 1950
Road tunnels The following is a list of the road tunnels with a length of or over. It does not include tunnels under construction. Tunnel Length (m) Date of opening Coordinates Zheleznitsa (on Struma motorway near Simitli) 2024 Vitinya (on Hemus motorway below Vitinya Pass) 1984 Topli Dol (on Hemus motorway near Botevgrad) 1980s Echemishka (on Hemus motorway near Botevgrad) 1980s Praveshki Hanove (on Hemus motorway near Pravets) 1999 Trayanovi Vrata (on Trakia motorway, below the Gate of Trajan pass ) 1970s A tunnel on the Gabrovo Ring-road 2020 Golemo Buchino (Lyulin motorway) 2011 Lyaskovo (on the bypass of Tsankov Kamak) 2010
The Kresna Gorge Tunnel, if built, would have been Bulgaria's longest tunnel at over . It was cancelled in 2015, before construction had begun, and it will be replaced with an alternative route featuring a number of smaller tunnels.
Vitinya Tunnel, on the Hemus motorway was the longest road tunnel in the country for 40 years between its opening in 1984 and 2024. It has been surpassed by the Zheleznitsa Tunnel on the Struma motorway.
References and notes