Effort to Maintain the First Cebu-Mactan Bridge

Challenge

The First Cebu-Mactan Bridge, also known as the “Serging Veloso Osmeña Jr. Bridge”, is an 860m-long steel truss bridge across the Mactan channel between Cebu island and Mactan island in the Philippines. It has been 50 years since its completion in 1973.

In this Project, to serve as a basis for development of future operation and maintenance policy of the bridge, a detailed condition survey of the bridge was carried out and rehabilitation works were undertaken according to the survey results.

Services

OC Global led the detailed condition survey of the bridge under a JICA Study, and suggested rehabilitation works that were urgently required. As requested by DPWH, OC Global supervised the rehabilitation works of the bridge as carried out by a local contractor.

1. Condition Survey
– Close-up visual observation (steel members and deck slab)
– Measurement of steel member thickness and dimensions
– Non-destructive testing, such as Magneti Particle Test
– Coring of the pier concrete and laboratory tests (Compression test, Carbonation test, Chloride content, etc.)
– Stress and stress frequency measurement
– Suggestions and reporting

2. Supervision of Rehabilitation Works

Results

As a result of the condition survey, a critical crack on a main steel member was found and the crack was successfully repaired.

Award

JSCE Award 2024