Engineering calculation and estimation of the stress-strain state of the bearing elements of the superstructure is carried out. The analysis and collection of information on traffic in 2019. The history of the loading bridge real load on the basis of mathematical model (presented in the form of a geometric progression) – showing an annual increase of intensity of traffic on bridge construction. The total fatigue damage of the bearing elements of the superstructure according to the Palmgren - miner hypothesis and the period of exhaustion of the operational resource of the bridge structure are determined.

Keywords: load capacity, loading, history of loading, residual resource, the miner's summation of fatigue durability