City of Tuttlingen
Date of Completion
The Kreuzstraße tunnel in Tuttlingen was opened to traffic in 2011. The new tunnel with its 950 m long route bundles the traffic of the B 14 and B 311 and frees the residents from through traffic. The tunnel represents the most important part of the B 311 relocation project in the Tuttlingen area and, with costs of around 31 million euros, represents the largest single item.
General drainage planning
On-site construction supervision