A Comprehensive Reliability Assessment Method for Existing Railway Bridges Based on Bayesian Theory

Table 3

Applicability status classes of existing railway bridges.

Risk rating	Bridge applicability	Probability interval
I	No apparent structural damage, functionally intact
II	Minor cosmetic damage to the structure, e.g., minor cracks
III	Moderate damage to the structure with some impact on normal use, e.g., significant cracks, significant corrosion of reinforcing steel, etc.
IV	Serious structural damage endangering the safety of the bridge
V	The level of damage to the structure is too severe for further use