Project Dubai, United Arab Emirates

Deep Tunnel Storm Water System

A groundbreaking tunnel for sustainable living in Dubai

The project, awarded to the Six Construct – PORR joint venture, consisted of a 10 km tunnel of 11.05 m boring diameter at a depth of 30 to 45 m. On top of that, four deep shafts (40 to 45 m deep) were constructed to connect the connection chambers, in which groundwater and storm water is collected and conveyed. In total, the system drains almost 40% of the entire urban area of Dubai, a total of 380 km².

Project details

Project name

Deep Tunnel Storm Water System

Area(s) of expertise


Contract type

Design & Build


Dubai, United Arab Emirates


Six Construct

External partner(s)



Dubai Municipality

Building Period

2017 - 2021

Total value

$ 354 million


Dubai World Central area (about 135 km2) and adjacent communities (about 245 km2)


10km tunnel of 11.05m boring diameter at 30-45m below ground.

Precast Factory - Production Hall

Precast Factory - Storage Yard

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