Overview

• The Boknafjord-Tunnel, also known as Rogfast, will be the world's longest and deepest undersea road tunnel at 27 kilometers long and 392 meters deep.
• The project, under construction since 2018, aims to create a ferry-free route between Kristiansand and Trondheim, reducing travel time from 21 to 10 hours.
• Norway’s government has confirmed a €1.9 billion budget for the tunnel, with tolls expected to cost around €38 per vehicle for a 35-minute crossing.
• The tunnel is a centerpiece of the E39 highway modernization, designed to boost freight transport efficiency and tourism along Norway’s west coast.
• This project is part of a broader European infrastructure push, including Denmark’s Fehmarnbelt Tunnel, which will connect Germany and Denmark by 2029.