E39 Eiganes tunnel (3.7 km tunnel) is part of the coastal main road between Kristiansand and Trondheim and built in conjunction with rv.13 Ryfast consisting of Ryfylke tunnel (14.3 km tunnel) from Strand to Hundvåg and Hundvåg tunnel (5.5 km tunnel ) further from Hundvåg to E39.
This contract involves technical pumping facilities for all of the 3 tunnels.