Tunnel Closures: Heslacher Tunnel and Quadreichenhaut Tunnel shut down due to technical issues.
The Viereichenhautunnel in Stuttgart has been closed since July 25, 2025, due to a technical disruption[1]. The municipal department of public works is managing the situation, working diligently to identify the cause and ensure a safe reopening[1][2].
Despite the closure, a partial reopening is planned for Saturday morning. One lane in each direction will be available between the Schattenring and Heslacher Tunnel on the B14 to facilitate traffic flow during the Christopher Street Day (CSD) event on Rotebühlstraße[2]. A speed limit of 30 km/h will apply in the affected section during this temporary measure[2].
Until the partial reopening, all road users are advised to avoid the area and follow detour signs to minimize congestion[1][2]. It's important to note that the Heslacher Tunnel and Viereichenhautunnel are two separate tunnels.
The full reopening of the Viereichenhautunnel is expected to occur as soon as possible[1]. In the meantime, the rerouting of traffic from the city center and the Schattenring may cause delays for some commuters[1].
Road users are encouraged to stay informed and follow the designated detours to reach their destinations efficiently[1][2]. The municipal department of public works is working to manage the traffic rerouting to minimize disruption[1].
[1] Municipal Department of Public Works Press Release, July 26, 2025. [2] Stuttgart City Council Press Release, July 28, 2025.
- The closure of the Viereichenhautunnel has impacted various industries, such as finance and transportation, as it disrupts the usual commuting routes.
- The partial reopening of the tunnel on Saturday morning will also affect the sports industry, potentially influencing the traffic and organization of the Christopher Street Day event on Rotebühlstraße.
