Risk Assessment with Monte Carlo Simulation to Improve Bridge Construction Safety

The safety of bridge construction has become a special concern for the Indonesian government since many bridge construction accidents occurred in 2017 and 2018. Construction projects involve a small number of contractor employees, so when conducting accident risk assessments, the results become less accurate. Monte Carlo simulation is a method that can be applied to conduct risk analysis with limited available data. This research began with the identification of potential risks that might occur in bridge construction, resulting in 24 types of risks. Risk assessment was conducted based on the list of risks identified by the contractor’s employees who were working on a bridge project. The results of the risk assessment were then analyzed and prepared for the Monte Carlo simulation process. The simulation results showed accurate outcomes with a total of 10,000 simulations. The greatest risks occur when a worker falls, which has a risk index of 12.5961, and a girder collapses during installation, which has a risk index of 16.1873.