Koznitsa (Bulgarian: Козница [ˈkɔznit͡sɐ]) 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 railway stations of Koprivshtitsa and Stryama and is 5,808 m long.[1][2]

Koznitsa
Overview
LineSofiaKarlovoBurgas
Operation
Constructed1949–1951
OpenedJune 6, 1951 (1951-06-06)
OwnerNational Railway Infrastructure Company
Technical
Length5,808.5 m
No. of trackssingle track
Track gauge1,435 mm (4 ft 8+12 in) (standard gauge)
Electrified~25 kV 50 Hz
Highest elevation818 m
Lowest elevation798 m
Grade2.0‰ / 6.4‰
Route map
Koznitsa (tunnel) is located in Bulgaria
Koznitsa (tunnel)
Koznitsa (tunnel) (Bulgaria)

References

edit
  1. ^ Рулев, Димитър; Марков, Минчо (2007). Електрифицираните железници на България, т. 1 (1903-1995) (in Bulgarian). София. p. 276.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ^ Деянов, Димитър (2005). Железопътната мрежа в България 1866-1975 (in Bulgarian). София: изд. "Булхаус" Стара Загора. p. 224. ISBN 954-9364-05-4.

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