Strategic Total Highway Asset Management

[摘要] The last decade has seen significant developments in highway asset management. A keycomponent to successful asset management is long-term network investment planning. Inorder to successfully manage a significant quantity of aging roadway infrastructure andgrowing traffic volume, agencies are faced with challenges in developing reliable longterm plans that maximize the network performance through value optimization.Current practice typically involves relatively independent planning for the bridge andpavement networks; with a very slight number of situations allowing for reliable trade-offanalysis between the two. While a situation in which the choice to improve twostructures rather than one pavement section may yield a greater percentage increase in thebridge network performance, than the opposite choice would for the pavement network -the reliability of this choice being right and at the right time significantly decreases overtime.Introduction of mutually inclusive highway asset planning in this research, by integrationof the bridges into an equivalent measure of the pavement network results in significantincreases in the long-term planning reliability - is proposed. Data from the Ministry ofTransportation of Ontario is used to demonstrate how this proposed approach wouldwork. A key point of this Strategic Total Highway Asset Management Integration(STHAMi) approach is the Conceptual Structural Integration Factor (CSIF). Applicationof CSIF and Bridge Condition Index (BCI) integration into a pavement performanceindex allows for representation and treatment of bridges as equivalent pavement sections.This allows for a better comparison of the assets over time.Compared to the traditional approach of mutually exclusive network level planning,STHAMi resulted in a higher percentage of network treated per unit of value, coupledwith consistently higher annual network performance over the long-term.In addition to significantly higher long-term sub-asset trade-off reliability, STHAMioffers potential for significant increases in organizational efficiency with respect to longtermhighway asset planning. Key benefits include introduction of one pavementperformance indicator as an all encompassing performance indicator for the completehighway asset, as well as the potential for long-term bridge network level planningexecution within a pavement engineering oriented organizational unit.Further STHAMi development is recommended through integration of other networkperformance measures such as operational and safety indicators.

[发布机构] University of Waterloo

[效力级别] Civil Engineering

[关键词] STRATEGIC TOTAL HIGHWAY ASSET MANAGEMENT;Civil Engineering