Infrastructure
Meridian Bridge
The longest cable-stayed bridge in the Western Hemisphere. 4,200 feet of primary span crossing the bay with seismic base-isolation engineering rated for 8.0+ magnitude events.
Client Pacific Holdings
Location San Francisco, CA
Year 2023
Value $2.1B
The Meridian Bridge represents the pinnacle of modern cable-stayed bridge engineering. Spanning 4,200 feet across the bay, it connects two metropolitan areas that were previously separated by a 45-minute ferry crossing.
Engineering Highlights
- Primary span: 4,200 ft cable-stayed
- Seismic rating: 8.0+ magnitude
- Foundation depth: 240 ft below sea level
- Construction duration: 38 months
- Peak workforce: 2,800 workers
The base-isolation system, developed in partnership with IRONFORGE structural engineering division, allows the deck to move independently of the towers during seismic events - a breakthrough that has since been adopted by infrastructure projects worldwide.