Combined Tunnels

Single bore shared by road and rail traffic between Portage and Whittier, Alaska. Cars drive on the rail floor in convoy windows b...

Kuala Lumpur flood and road tunnel in one. Storm water diverts through the lower channel, and when storms peak the whole bore swit...

Bridge and tunnel crossing of Tokyo Bay between Kawasaki and Kisarazu: 9.6 km of tunnel under the bay plus bridge spans, meeting a...

Crossing of the mouth of Chesapeake Bay between Virginia Beach and the Eastern Shore, mixing trestles, two immersed tunnels and hi...

The 55 km bridge tunnel crossing of the Pearl River estuary, with a 6.7 km immersed twin tube between two artificial islands letti...

Part of the G40 crossing to Chongming island, a 15.4 m diameter TBM drive, then the largest shield tunnel in the world. Its upper ...

Immersed road and rail tunnel under the Fehmarn Belt between Rodby in Denmark and Puttgarden in Germany. Will be the longest immer...

The immersed tube half of the Oresund link, carrying a four lane motorway and a double track railway from Copenhagen Airport on Am...