Túnel d’Envalira is in the north of the Principality of Andorra, in the Encamp parish.

The concession starts in Andorra´s Carretera General II, 300 m before the access to the Grau Roig ski resort. After the toll area, drivers enter the tunnel, with 2879 m in length and runs at an altitude ranging between 2043 m and 2054 m above sea level.

Túnel d’Envalira crosses the Ariège river by means of a viaduct which marks the end of the concession and the project´s connection with France’s Route Nationale 22.