Degree of damage of the bridge and safety level is closely related to the characteristics of the lifetime maximum load effect that occur on the bridge. Maximum load effect is dominated by traffic characteristics such as heavy vehicle composition and daily traffic volume.
The purpose of the study is to analyze the structural characteristics of vehicle loading based on survey data collected, in which some major factors, such as vehicle configurations, vehicle wieghts, traffic modes by the probabilistic approach. Then, this study perform analysis of the safety level as compared with design criteria domestic highway bridges the current regulations are enclosed.