Črni Kal Viaduct

The Črni Kal Viaduct (Slovene: Viadukt Črni Kal)[1] is the longest and the highest viaduct in Slovenia. It is located on the A1 motorway above the Osp Valley near the village of Gabrovica, about 20 kilometres (12 mi) east of Koper. It is named after the village of Črni Kal. The viaduct is 1,065 metres (3,494 ft) long and is mounted on 11 Y-shaped columns (its distinguishing feature), the highest reaching 87.5 m (287 ft).

Črni Kal Viaduct

Viadukt Črni Kal
Črni Kal gradnja 2002.JPG
The Črni Kal Viaduct during the construction
Coordinates45°33′26.98″N 13°52′16.33″E / 45.5574944°N 13.8712028°E / 45.5574944; 13.8712028
CarriesA1 motorway
CrossesOsp Valley
LocaleGabrovica, Slovenia
Total length1,065 m (3,494 ft)[1]
Width26.5 m (87 ft)
Heightfrom 10 m (33 ft) to
95 m (312 ft)
Longest span140 m (460 ft)[1]
Load limit4 lanes, 2 emergency lanes
Construction startSeptember 2001
Construction endSeptember 2004
Opened24 September 2004
Daily traffic19,606 vehicles

The viaduct was designed by Janez Koželj and Marjan Pipenbaher, who was also its constructor.[1] The construction work began in 2001 and the viaduct was opened for traffic on 23 September 2004.[2] When almost completed in May 2004, it served as a stage of the Giro d'Italia race.[3]


  1. ^ a b c d e Kuhar, Špela; Struna Bregar, Ana (24 February 2012). "Mostovi kot znamenitost" [Bridges as a Landmark]. Mladina.si (in Slovenian). No. 8.
  2. ^ "Viadukt Črni Kal" (in Slovenian). DARS. Retrieved 2010-11-09.
  3. ^ "Kolesarska dirka po Italiji". MMC RTV-SLO (in Slovenian). Retrieved 2010-11-09.