Prediction of Bridge Component Ratings Using Ordinal Logistic Regression Model

Table 2

Description of variables used in analysis.

Name of variable	Description of variable
Reconstruction	Reconstruction record: Yes, No (binary variable)
Bridge Material Type	Structure materials: Steel, Concrete, Timber (dummy variable)
District	Highway districts: Bismarck, Devils Lake, Dickinson, Grand Forks, Minot, Valley City, Williston, Fargo (dummy Variable)
Age	Bridge age: Inspection year-construction year or inspection year-reconstruction year (continuous variable)
Age2	Bridge age squared (continuous variable)
ADT	Annual daily traffic per lane (continuous variable)