Mumbai Coastal Road — BIM for India's Largest Urban Tunnel
Delivering clash-free models for a twin-tube undersea tunnel beneath Mumbai's coastline.
10 km
Total road length
2
Tunnel tubes
LOD 300
Delivery level
₹12,700 Cr
Project cost
Project overview
The Mumbai Coastal Road is India's most ambitious urban infrastructure project — a 10 km elevated and tunnelled highway along the city's western coastline. The twin-tube undersea tunnel section required precise BIM coordination for structural, MEP, and traffic management systems.
What made this project complex
Building beneath an active coastline in one of the world's most densely populated cities required millimetre-level coordination between tunnel lining, ventilation shafts, escape passages, and roadway systems. Any spatial conflict during construction would cause catastrophic delays.
How BIM coordination delivered
Revit and Civil 3D models were federated for the tunnel alignment, with structural and MEP models overlaid for clash detection. Navisworks reports were issued weekly to the construction team, with critical clashes escalated within 24 hours.
Measurable outcomes
Achieved zero critical clashes at tunnel fit-out stage
Coordinated ventilation and egress systems across twin tubes
Reduced construction RFIs by 50% versus comparable projects
Delivered as-built models for future maintenance operations
Disciplines
Tools & Software
Delivery Level
LOD 300
Level of Development
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