Countries Connected by the New Fehmarn Belt Fixed Link

The **Fehmarn Belt Fixed Link**—the **world's longest immersed tunnel** (18 km / 11.2 mi)—officially **opened in 2029** (construction began 2021), directly connecting:

🇩🇰 Denmark & 🇩🇪 Germany

• Danish Side: **Rødbyhavn, Lolland** — connects to **Copenhagen (160 km)** via **E47/Motorring 3**.
• German Side: **Puttgarden, Fehmarn Island** — connects to **Hamburg (90 km)** via **A1 / B207** and **rail (Lübeck–Puttgarden)**.

What It Carries

• 4-lane Motorway (E47) — cars, trucks, buses.
• Double-track Electrified Railway — **high-speed passenger (200 km/h), freight**.

Impact

• Travel Time: **Copenhagen–Hamburg: 2.5 hrs (train) / 3.5 hrs (car)** — **vs. 4.5 hrs (ferry+drive) / 5+ hrs (train+ferry)**.
• Ferry Replacement: Replaces **45-min ferry** (Rødby–Puttgarden) — **capacity, reliability, weather independence**.
• Green Corridor: Shifts **freight from road to rail**; enables **electric trucking**; cuts **CO₂ ~200k tons/yr**.
• Scandinavia–Europe Integration: Completes **Scan-Med TEN-T Core Network Corridor** (Finland–Malta).
• Cost: **€7.4B (DKK 55B)** — **Denmark finances; Germany builds land connections.** User fees (tolls) repay Danish state loan.

**Not "underwater tunnel" in the boring sense**—**immersed tube**: **89 prefab concrete elements** (73,500 tons each) **floated, sunk, joined in trench** on seabed. **Engineering marvel.**