Leighton Asia and EIC Activities are currently working to deliver the Candaba 3rd Viaduct project in the Philippines.
EIC Activities is leading the detailed design services for the project. The scope of work covers an independent 5.3km bridge between the existing northbound and southbound lanes of the viaduct. EIC is delivering permanent and temporary works designs for the project.
Working together
The project involves several key partners. NLEX Corporation is the client and the project manager, Leighton Asia serves as the contractor, while EIC Activities is the lead consultant handling all bridge and geotechnical work. Local partner PKII is responsible for civil and electrical engineering, and OneDCS is providing services in BIM and drafting for EIC Activities.
The 5.3km, 3-lane infill viaduct, consisting of 260 spans, is located in the highest seismic zone of the Philippines, and is designed for a net 0.6g force. The 10 span modules are made fully integral, resulting in minimal maintenance and the use of only 40 elastomeric bearings on the entire bridge. The project also includes a new pedestrian walkway bridge across the Pampanga River.
Innovative crane solution
EIC and Leighton Asia devised a solution involving cranes on deck due to the constraint of zero disruption to the existing tollway and the long lead time for a launch gantry. The girder has a full-depth deck incorporated, with a 900mm stitch pour and no onsite formwork for the deck.
The 64T double Tee girders are made of reinforced concrete, not stressed, to simplify production as there are no pretension stress beds large enough in the market. The girder design is governed by the 120T crane load. The client also required a relocatable precast barrier designed for a 500kN impact load.
EIC Activities also designed the 180m temporary crane and access jetty across the Pampanga River.
This collaboration represents a significant milestone in infrastructure development in the Philippines, demonstrating the capabilities of Leighton Asia and EIC Activities in delivering large-scale, complex projects.
In February 2023, Leighton Asia was selected by NLEX Corporation, the client and the project manager, to deliver the third bridge of the Candaba Viaduct in the north of Manila, Philippines. This remarkable project marks the three-decade continuing partnership between Leighton Asia and NLEX Corporation.