Ramboll-led tunnel concept wins Danish approval

Danish parliament has given the go-ahead to a bridge that will link Denmark and Germany across the Fehmarn Belt, which was proposed by consulting engineering group Ramboll in partnership with Arup and TEC.

At 18km the Fehmarn will be the longest immersed tunnel in the world, its closest rival being the 5.8km BART Tunnel in San Francisco, and also one of the deepest at an immersed depth of 40m.

A four-lane motorway and two-track rail link will speed passengers through the tunnel in an estimated 7–10 minutes, as compared with the 45-minute ferry crossing available now.

Construction on the immersed tunnel is expected to commence in 2014, with the link scheduled to open to traffic in 2020.