Brenner Base Tunnel
Brenner Base Tunnel in Innsbruck – Fortezza, Austria / Italy: 55 km, under construction. Developer: BBT SE. Architect: —. Construction progress, photos and news.
- Length
- 55 km
- Type
- Infrastructure
- Status
- Under construction
- Stage
- Rising
- Developer
- BBT SE
- Architect
- —
- Location
- Innsbruck – Fortezza, Austria / Italy
A rail tunnel under the Alps that, with its Innsbruck bypass, becomes one of the longest underground rail links in the world.
Most freight crossing the Brenner Pass still goes by truck. The tunnel only pays off if access lines on both sides are finished too.
Latest updates
Last updated October 22, 2026.
- Status: main tubes linked, opening 2032 to 2034
On July 28, 2026 the Austrian and Italian main tubes were joined under the Brenner Pass. Opening is now expected between 2032 and 2034.
Source
Similar projects
- Fehmarnbelt Tunnel · Rødby – Puttgarden · 18 km · Under construction
- Vegas Loop · Las Vegas · 109 km (planned) · Under construction
- Music City Loop · Nashville · 16 km (first phase) · Under construction
- LA Metro D Line Subway Extension · Los Angeles · 14 km (three sections) · Under construction
- Sepulveda Transit Corridor · Los Angeles · 22 km (planned) · Proposed
- Second Avenue Subway, Phase 2 · New York · 3 km (1.8 mi) · Under construction
Listed in: Infrastructure & megaprojects