S10 highway (Georgia)

The Georgian S10 route (Georgian: საერთაშორისო მნიშვნელობის გზა ს10, Saertashoriso mnishvnelobis gza S10, road of international importance), also known as "Gori-Tskhinvali-Gupta-Java-Roki (Russian border)", is a "road of international importance" within the Georgian road network from Gori via Tskhinvali to the Russian border at the Roki Tunnel with a length of 92.5 kilometres (57.5 mi). After crossing the Russian border the road continues as A164 highway to Alagir and the R217 "Caucasus Highway". The S10 route, which intersects with the S1 highway just outside of the city of Gori, is often referred to as Transkam or Transcaucasian Highway. It is not part of European or Asian international highway routes.

The road reaches its highest point of 2,112 m (6,929 ft) above sea level at the southern portal of the Roki Tunnel, which opened in 1984. The tunnel is shared with Russia and was the longest within the Soviet Union upon its commissioning with a length of 3,730 m (2.32 mi). It is still the longest tunnel (partially) in Georgia. Yet, this feature has limited value in Georgia as the highway is not controlled by the Georgian government beyond Ergneti village near Tskhinvali where the Administrative Boundary Line of breakaway South Ossetia runs. Crossing into South Ossetia from Georgian controlled territory (and vice versa) is not possible.