The Construction Briefing visits the €7.4 billion Fehmarnbelt project to see progress on preparations to build the world’s longest immersed tube tunnel. Born and bred on the island of Lolland in ...

Walter C. Grantz, 88, an international expert in immersed-tube tunnel construction who most recently was lead engineering consultant for the 23-mile, $756-million Thimble Shoal Parallel Tunnel now ...

Three international construction teams have been identified to build what will be the world’s longest road-rail immersed-tube tunnel, linking Denmark and Germany. Denmark's state-owned developer of ...

The first tube of the world's widest immersed channel is expected to be put in position of a mega bridge across the Lingding Bay at the mouth of the Pearl River in South China soon, according to an ...

North China's first immersed tube undersea tunnel, the Dalian Bay Undersea Tunnel, opened to traffic on Monday in Dalian, Liaoning province. The 5.1-kilometer tunnel consists of 18 tubes, each ...

The immersed tube method, a version of the cut and cover technique, is a cheap and easy way to construct a tunnel under water -- and it's generally the fastest way. Here's how it works: Dredging ...

Historically, immersed tube tunnels (IMTs) have been seen as a third option behind bridges and bored tunnels, but the record-breaking €7.1bn Fehmarnbelt Tunnel is helping to change all that.