Causes for Expressway Viaduct Collapse and Workplace Safety
- The viaduct collapse near PIE-TPE was preliminarily attributed to the failure of corbels supporting the deck slab, with a full investigation by LTA, MOM, and BCA expected to conclude by October.
- LTA’s procurement uses a price-quality method (e.g., 70:30 for this project), where safety records form at least 25% of the quality score; contractors with serious lapses can be disqualified, and 16 bids from 10 companies have been vetoed since 2015.
- The main contractor OKP was awarded the project despite a prior fatality in 2015, as investigations were ongoing and it scored highest overall after factoring in its safety history, project track record, and bid price, though LTA acknowledged the need to weigh recent incidents more heavily in future evaluations.