The article discusses a method for calculating fatigue damage in steel bridge decks due to vehicle loads and pavement temperature. The researchers analyzed how temperature affects fatigue stress in the bridge deck and proposed a simulation method for fatigue stress from random vehicle loads. They found that temperature significantly impacts fatigue damage, with rib-to-rib welded joints experiencing greater cumulative damage than deck-to-rib joints. This information can help bridge engineers better understand and analyze fatigue in orthotropic steel bridge decks.