E134 Røldal - Seljestad is considered a vital connection between the eastern and western Norway. It also has a 13 kilometer tunnel. It is in the high priority to-do list of Statens vegvesen (the Norwegian Public Roads Administration). Estimated cost is NOK 4 921 million writes Veier24.no.

https://www.veier24.no/artikler/regjeringen-lover-penger-til-13-kilometer-tunnel-pa-e134-i-ullensvang/536155