Koznitsa (tunnel)

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
OpenedJune 6, 1951 (1951-06-06)
OwnerNational Railway Infrastructure Company
Length5,808.5 m
No. of trackssingle track
Track gauge1,435 mm (4 ft 8 12 in) (standard gauge)
Electrified25 kV
Highest elevation818 m
Lowest elevation798 m
Grade2.0‰ / 6.4‰
Route map
Koznitsa (tunnel) is located in Bulgaria
Koznitsa (tunnel)
Koznitsa (tunnel) (Bulgaria)

Koznitsa is a railway tunnel under the Koznitsa ridge in the Stara planina (Balkan Mountains), the longest tunnel in Bulgaria. The tunnel is located between the Bulgarian towns of Koprivshtitsa and Klisura and is 5,808 m long.[1][2] It is the seventh tunnel on the SofiaKarlovo line, starting at the exit of Koprivshtitsa station and ending just before Stryama station. Along its entire length the tunnel is straight and at Koprivshtitsa the lights of the locomotive are visible a long distance into the tunnel.[citation needed]


  1. ^ Рулев, Димитър; Марков, Минчо (2007). Електрифицираните железници на България, т. 1 (1903-1995) (in Bulgarian). София. p. 276.
  2. ^ Деянов, Димитър (2005). Железопътната мрежа в България 1866-1975 (in Bulgarian). София: изд. "Булхаус" Стара Загора. p. 224. ISBN 954-9364-05-4.

Coordinates: 42°41′54″N 24°22′55″E / 42.69833°N 24.38194°E / 42.69833; 24.38194