Machine Learning and Statistical Test–Based Culvert Condition Impact Factor Analysis

Table 4

Summary of variables with high predictor importance.

Culvert material	Condition impact factors
Concrete	Span	pH	Cover height	Age	Rise
Corrugated metal	Age	Span	Rise	pH	Cover height
Corrugated plastic	Cover height	Age	Rise	Length	ADT
Vitrified clay	Cover height	Slope	Span	Age	ADT