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A4’s Königshainer Berge Tunnel Fully Reopens After Nearly Two Years of Modernization

Safety upgrades bring the 3.3-kilometre A4 tunnel back to full, two-tube operation.

Overview

  • The final closure toward Dresden was lifted on Friday at 22:00, restoring full traffic flow with no further delays expected, according to Autobahn GmbH.
  • The reopening concludes a refurbishment that began in March 2024 and kept vehicles moving by routing traffic through one tube while work proceeded in the other.
  • Upgrades include new emergency call cabins and additional sensors for early fire detection to meet current technical standards.
  • About 30,000 vehicles use the tunnel daily, roughly 40% of them heavy trucks, underscoring its importance for regional and freight traffic.
  • At approximately 3.3 kilometres, the tunnel is Germany’s fourth-longest and sits between the Nieder Seifersdorf and Kodersdorf interchanges under a protected landscape area.