Skip to content

Massive Tunnel Spanning Double the Size of Manhattan Near Completion - A Multi-Billion Dollar Infrastructure undertaking, Assembly from Segment to Segment

massiveunderwater tunnel being constructed in Europe, twice the size of Manhattan, promises to significantly reduce travel times

Gigantic infrastructure project near completion: The World's Longest Submerged Tunnel, spanning an...
Gigantic infrastructure project near completion: The World's Longest Submerged Tunnel, spanning an area twice the size of Manhattan, costing a staggering $7 billion, has almost been fully constructed, piece by painstaking piece.

Massive Tunnel Spanning Double the Size of Manhattan Near Completion - A Multi-Billion Dollar Infrastructure undertaking, Assembly from Segment to Segment

The Fehmarnbelt Tunnel, a groundbreaking project initiated in 2008, is set to revolutionize travel between Northern Europe destinations. This immersed road and rail tunnel, stretching 18 kilometers beneath the Baltic Sea, will connect Puttgarden in Germany with Rødbyhavn in Denmark.

Compared to the Channel Tunnel, the Fehmarnbelt Tunnel boasts unique features. Its construction method, involving the use of precast concrete segments, allows for quicker and more precise assembly. This contrasts with the Channel Tunnel's boring machine excavation. The Fehmarnbelt Tunnel also includes a dual-track electrified railway and two double-lane motorways, separated by a central service tunnel, enabling simultaneous road and rail traffic in one structure.

The tunnel's design offers operational efficiencies and easier maintenance. The central service tunnel provides access for maintenance operations without disrupting traffic. Moreover, the tunnel incorporates energy-efficient lighting, advanced ventilation, and high-tech monitoring systems for long-term safety and sustainability.

The Fehmarnbelt Tunnel will significantly reduce travel times. Ferry crossing times between Germany and Denmark will drop from a current 45 minutes to just 7 minutes by train and 10 minutes by car. Travel time between Copenhagen and Hamburg will decrease from 4.5 hours to 2.5 hours, potentially altering travel preferences in the region.

Despite initial concerns over unfair competition, potential damage to marine habitats, and protection of the native harbor porpoises, the Fehmarnbelt Tunnel's benefits have led critics such as Michael Løvendal Kruse from the Danish Society for Nature Conservation to soften their stance, recognizing potential long-term ecological benefits. In November 2020, Germany's Federal Administrative Court cleared the project with conditions regarding limiting underwater noise, reducing sediment disruption, and monitoring marine life during construction.

The Fehmarnbelt Tunnel will function as a strategic land corridor between Scandinavia and Central Europe. With its completion, the tunnel will offer faster travel times, enhanced multimodal connectivity, and operational efficiencies compared to the rail-only, bored Channel Tunnel.

Key Differences between the Fehmarnbelt Tunnel and the Channel Tunnel

| Feature | Fehmarnbelt Tunnel | Channel Tunnel | |-----------------------------|-----------------------------------------|-----------------------------------| | Length | 18 km | 50 km | | Construction Method | Immersed tunnel with precast concrete segments | Bored tunnel using TBMs | | Transport Modes | Combined road (two double-lane motorways) and rail (dual track) | Rail only (two rail tunnels) | | Central Service Tunnel | Yes, for maintenance and safety | Yes, for services and security | | Speed/Travel Time Impact | Cuts ferry crossing (45 min) to 7-10 min by rail/car | Trains up to 160 km/h, 35-minute crossing | | Maintenance & Sustainability | Easier maintenance, energy-efficient lighting, ventilation, high-tech monitoring | Standard tunnel maintenance | | Geographic Connection | Between Germany (Puttgarden) and Denmark (Rødbyhavn) beneath Baltic Sea | Between England (Folkestone) and France (Calais) beneath English Channel |

The first tunnel element was officially inaugurated on June 17, 2024, marking a significant step forward in the construction of this pioneering immersed road and rail link. The Danish company Femern A/S, responsible for the project, operates the largest tunnel production facility in Europe and emphasizes its commitment to minimizing environmental impact.

[1] Fehmarnbelt Fixed Link [2] Fehmarnbelt Tunnel [3] Channel Tunnel

  1. The Fehmarnbelt Tunnel, a combination of a road and rail link, boasts a unique construction method using precast concrete segments, diverging from the Channel Tunnel's boring machine excavation in its immune-tunnel design.
  2. In the realm of environmental science, the Fehmarnbelt Tunnel is making strides towards sustainability with energy-efficient lighting, advanced ventilation, and high-tech monitoring systems, amid concerns in the finance industry over potential damage to marine habitats.
  3. As the Fehmaretbelt Tunnel bridges the gap between transportation and technology, it will have a profound impact on the industry, with the potential to alter travel preferences and enhance multimodal connectivity, ultimately benefiting both environmental-science and finance sectors.

Read also:

    Latest