Introduction. The actual technical condition of Ukraine’s critical transport infrastructure facilities is a retrospective indicator of the problem of maintenance and operation. The primary task during the restoration of transport infrastructure facilities is to compile a defect list for each facility in order to further develop design solutions and prepare design and cost documentation. The rate of degradation and its patterns directly affect the final cost of restoring transport structures.
Determining the technical condition of transport structures, accompanied by an analysis of the condition of structural elements and operating conditions, makes it possible to effectively select technological solutions and construction materials for repair works, taking into account the study of degradation patterns to ensure acceptable reliability and durability, which is a global scientific issue of today.
The application of numerical modeling to determine the load-carrying capacity of a bridge is an urgent prerequisite for clarifying its operational condition, as well as for predicting its reliability and durability as a function of time.
Problem Statement. It has been established that there is a substantiated need to carry out numerical modeling of the bridge’s load-carrying capacity, taking into account corrosion processes, in order to assess its residual service life.
Objectives. The aim of this research is to calculate the load-carrying capacity of the bridge using the finite element method based on the results of a special detailed inspection of the bridge over the Guiva River on Lomonosova Street in Andrushivka, Zhytomyr Region.
Results. The study established a pattern of loss of load-carrying capacity of a steel–reinforced concrete road bridge, taking into account the weakening of truss elements due to corrosion processes. Furthermore, based on the results obtained, the technical condition of the structure was determined; an assessment of the loss of load-carrying capacity in accordance with the identified defects and operational condition was carried out; the residual service life was evaluated; proposals for eliminating defects and damages were provided; and a conclusion regarding the feasibility of new construction was formulated.
Conclusions. The study presents numerical modeling of the bridge’s load-carrying capacity, taking into account corrosion processes, based on the results of a special detailed inspection.
