World’s Longest Immersed Tunnel Being Built Between Denmark And Germany Hits Milestone & More News Here

When it’s completed, the Fehmarnbelt tunnel, which is able to hyperlink Denmark and Germany, would be the world’s longest immersed tunnel. In an vital milestone, dredging the ditch for the 18-kilometer, or 11.1-mile, tunnel is now half completed.

“We are, of course, delighted that the work is progressing on schedule,” stated Henrik Vincentsen, CEO of Femern A/S, the Danish developer managing the challenge, in response to Ground Engineering.

“Our focus is now on the project’s next goal. For us, it is important that the construction of the Fehmarnbelt tunnel is built as sustainably as possible,” Vincentsen defined. “Wherever possible, we and our contractors try to identify opportunities to optimize the project for environmental reasons and to contribute our know-how for future infrastructure projects.”

The Fehmarnbelt tunnel will join Rødbyhavn on the island of Lolland in Denmark and Puttgarden in northern Germany. The tunnel, which is anticipated to open in 2029, will function a four-lane freeway in addition to two railway tracks.

Dredging operations started in July 2021 and are anticipated to be accomplished in 2024. Ultimately, as much as 19 million cubic meters of soil might be dredged after which used to construct new nature and leisure areas, Femern A/S explains.

The Tunnel’s Benefits

The concept to attach Denmark and Germany by both a bridge or tunnel had been thought of for years. Finally, building on the Fehmarnbelt tunnel started after 10 years of planning.

When it’s accomplished, the tunnel will make commuting simpler. Indeed, the journey between Rødbyhavn and Puttgarden will take 7 minutes by practice and 10 minutes by automotive. Consequently, these vacationers will save roughly 1 hour by not having to take a ferry for the crossing, in response to Femern A/S.

More considerably, the Fehmarnbelt tunnel will play an vital function within the “green transition” of the European transportation community. That’s as a result of enabling visitors to make use of the shortest and quickest route will scale back CO2 emissions whereas additionally releasing capability on roads and railways.

What’s extra, Denmark can be constructing rail connections to and from the tunnel for electrical trains able to working at speeds of as much as 200 kilometers, or about 124 miles, per hour. Using these trains will, in fact, shorten journey instances, however they may even allow decreasing CO2 emissions as a result of vacationers received’t must depend on buses. 

A Unique Approach

For comparability, the 50-kilometer (31-mile) Channel Tunnel linking England and France, was constructed utilizing a boring machine, slightly than via immersing pre-built tunnel sections.

Here’s how the Fehmarnbelt tunnel might be constructed. First, a tunnel portal is being inbuilt each Denmark close to Rødbyhavn and in Germany close to Puttgarden. These portals join the tunnel’s railway and freeway with every nation’s roads and railways.

After that, 79 commonplace and 10 particular components — or sections — might be constructed. Each commonplace factor is 217 meters lengthy (virtually 712 toes) and weighs over 81,000 tons.

Each factor will then be fitted with waterproof bulkheads after which towed into place earlier than being lowered into the seabed by cranes. Once in place, they are going to be fitted collectively. 

Once all the components are related, the following section of building is to start what Femern A/S calls “technical and mechanical installations.” This work contains every thing from laying railway tracks and freeway lanes to putting in air flow, cameras, and communication programs.

The whole challenge is anticipated to be accomplished in time for the tunnel to open in mid-2029.

For extra about fascinating bridges you may drive throughout, you’ll want to learn:

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