Now that 17 years of construction to build the world’s longest tunnel is ramping down, a massive project to expand Alpine infrastructure soon will launch.
Design-build contracts valued at $4.5 billion for the world's longest immersed tube tunnel, between Denmark and Germany, were signed in Copenhagen on May 30. Construction on the 18-kilometer Femernbelt tunnel is set to start in January 2018 and last eight and a half years.
Contractor Costain Group plc., London, is piloting a smartphone-accessible system, called Smart Highways, to help with long-term highway asset management and maintenance
The contract includes a tunnel under the Nile river, five elevated stations and two at-grade stations. When complete, the project will increase Cairo's network to 100 km.
A 300-meter-tall timber skyscraper would be more sustainable and faster to construct than conventional buildings, says the Centre for Natural Material Innovation.