SELECTED PROJECTS
Niayesh Road Tunnel
This project is located in northwest of Tehran which connects Niayesh highway to Sadr highway. 6.6 km long Niayesh tunnel is the longest urban tunnel in the Middle East which is excavated by NATM method. Typical width of the tunnel is 20m which increases to 30 m in some sections.
| Niayesh Project | Total Length: 6.675m (10.300m with access roads) | |
| North Tunnel | South Tunnel | |
| Length (m) | 3.780 | 2.895 |
| Average Daily Traffic (ADT) | 42.000 | 52.500 |
| Design Speed | 60 km/h | 60 km/h |
| Overburden | Max: 40 m | Max: 38 m |
| Min: 4.5 m | Min: 6 m | |
| Shotcrete | 475.000 m3 | |
| Excavation | 1.380.000 m3 | |
| Concrete for Final Lining | 265.000 m3 | |
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