line with Saudi Arabia’s urban development strategy. Overseen by the National Water Company
(NWC), this initiative improves the transport of wastewater from key areas in central-eastern and
northern Jeddah to the city’s main treatment facility, boosting efficiency and capacity for future
urban growth.
– Location: Jeddah, Saudi Arabia
– Duration: 2021-2023
– Client: Saudi National Water Company (NWC)
– Contract Value: 195 Million SR
– Tunnel Diameter: 3,500 mm (3.5 meters)
– Total Length: 1 km
– Tunnel Sections: 3 separate tunnels
– Shaft Upgrades: 5 shafts (55 meters depth)
– New Shaft Construction: 1 shaft (60 meters depth)
Key Features:
Advanced Micro-Tunneling System for Maximum Efficiency:
• Deep launch shafts excavated to deploy tunneling equipment.
• Laser-guided MTBM used for precise underground tunneling.
• Pipe jacking technique installs precast pipes behind the TBM.
• Reception shafts constructed for secure MTBM retrieval.
Improved Infrastructure & Urban Development:
• Expands sewage capacity to meet Jeddah’s population needs.
• Minimizes surface disruption and protects environment.
• Safely tunnels under Al Haramain Train without interference.
• Enhances drainage for better flood control and wastewater flow.
