Research Article
Nonparametric Binary Recursive Partitioning for Deterioration Prediction of Infrastructure Elements
Table 3
Explanatory variables used in the BRP method application.
| Variable name | Variable description |
| AGE | Deck age at beginning of time-in-state or observation period, in years | AVGADT | Unweighed average of daily traffic for all bridge inspection records | CONSTRTR | Year of construction | DECKCOND | Deck operational condition | DECKWID | Deck width, in tenths of foot | HWCLASS | Highway class: NHS, major STP, minor STP, and local | LANEPDIR | Number of traffic lanes per direction | NUMSPANS | Number of main bridge spans | REGION | Dummy variable: North = 1, South = 0 | SKEW | Bridge skew effect | SPANLEN | Length of the bridge main span | TIS | Time in condition state | TYPE | Deck structural type: simple concrete | WEARSURF | Wearing surface protective systems: concrete, no protective system |
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