MediCarrera - #Didyouknow that the Lærdal Tunnel in Norway is the world's longest? It is 24.5 km long, and it cost about USD $110 million. The design inside the tunnel is admired
Tunnels in Norway: The Longest, Safest and Most Beautiful
Laerdal Tunnel – Aurland, Norway - Atlas Obscura
Longest road tunnel in the world – Lærdal Tunnel, Norway - Arriving In High Heels
Tunnels in Norway: The Longest, Safest and Most Beautiful
Norway Signs Off on $2.2B Contract for Road and Tunnel Project | Engineering News-Record