Review article

The article deals with a forecasting technique proposed by the author which can be applied to reinforced concrete bridge structures in Saint Petersburg in operation with the purpose of assessing their technical condition. Maintenance features and hard conditions are considered. The analysis of interrelation between deterioration and reliability schedules is carried out, the mathematical description of the latter is received. Parametrical values of the offered function of the technical condition dependence from service life durability are introduced and substantiated. Reliability and probability theories apparatus is used. It is offered to carry out the forecasting of some specific technical level achievement with a set of reliability indexes.