Črni Kal Viaduct, Road viaduct near Gabrovica, Slovenia

The Črni Kal Viaduct is a 1,065-metre road viaduct on the A1 motorway above the Osp Valley near Gabrovica. It stands on eleven columns, six of them single shafts that split into a Y shape; the tallest measures 87.5 metres, or 95 metres including the deck. The two separate carriageways give a total width of 26.5 metres.

Construction began in 2001 and finished in 2004 when the bridge officially opened to traffic. The project improved road connections between Slovenia's inland regions and its coast.

The viaduct is named after the village of Črni Kal, which lies below it, while the structure itself stands above the village of Gabrovica. Its opening on 23 September 2004 was marked by a ceremony at which the Pihalni orkester Koper wind band and the RTV Slovenija Symphony Orchestra played on the deck.

The viaduct is easily accessible to drivers traveling between Ljubljana and Koper. There are no dedicated viewing areas, but visitors can see it clearly from the roadside.

On 15 September 2004, Pošta Slovenije issued a commemorative stamp block with a face value of 95 SIT, enough for foreign postage; the number 95 matches the height in metres of the viaduct's tallest column. The bridge was first fully connected on 23 May 2004, when Giro d'Italia riders crossed it.