Tajrish Square Tehran

Underground shortcut

The popular and vibrant district of Tajrish is located in the north of the city of Tehran. Because of the growing population and increased motorisation, the city authorities decided on measures to improve the local infrastructure surrounding its historic centre. Tajrish Square and the area in front of the mosque are to be freed from motorised traffic. To achieve this objective, there will be connections from a road tunnel to the planned underground bus terminal. An alternative proposed by KREBS+KIEFER resulted in a clear decision in favour of a two-level tunnel: The space available for a cut-and-cover tunnel was very limited and the cross sections of the tunnel were too variable to use mining techniques. Two mountain streams which would cross the tunnel presented major challenges.

KREBS+KIEFER was involved in the planning process right up to tendering. An important aim was to preserve as many as possible of the existing trees. This had a decisive influence on the course of the road tunnel. A specialist planner was also commissioned to recommend measures during the construction process.


  • Design planning