01333190

Component

The existing formulas used by the Texas Department of Transportation (TxDOT) to allocate the statewide maintenance budget rely heavily on inventory and pavement evaluation data. These formulas include regional factors and rainfall indices that vary by district to account for differences in environmental and soil factors across the state. The existing regional factors were developed in the 1990s and were intended to reflect differences in environmental and soil factors between districts. Since the regional factors were first introduced, a recent TxDOT project compiled a database of climatic and soil factors that characterize the variation of climatic and soil conditions across Texas. Following up on this development, TxDOT’s Maintenance Division directed an implementation project to re-examine the existing regional and rainfall factors with the objective of revising the current factors to better reflect differences in climatic and soil conditions between districts. This paper documents the evaluation of the existing rainfall and regional factors, and the development of a revised set of factors for maintenance cost allocation.

01329018

11-1844

English

21p

2011

Transportation Research Board 90th Annual Meeting

DVD

Maps; References (10) ; Tables (6)

Condition surveys; Cost allocation; Data collection; Maintenance; Pavement maintenance; Rainfall

Texas

Highways; Maintenance and Preservation; Pavements; I60: Maintenance

Transportation Research Board Annual Meeting 2011 Paper #11-1844

TRIS, TRB

Feb 17 2011 5:56PM