IMPROVING NETWORK CONDITION WITH PREVENTIVE MAINTENANCE- A PAVEMENT MANAGEMENT SYSTEM CASE STUDY IN CHRISTIANSBURG, VA

摘要

This paper discusses the development of a pavement management system (PMS) for the Town ofChristiansburg VA, and the use of pavement management applications to demonstrate theeffectiveness of implementing preventive maintenance on their street network. Students atVirginia Tech worked with personnel from the Town of Christiansburg to gather inventory dataand past work history on all of the pavements within the town's network. First, the network wasdeveloped by importing existing GIS data into commercially available PMS software. Theexpected pavement performance was then modeled using age data along with conditioninformation gathered during a survey of the network. The condition data, age data andperformance data were all combined to develop several maintenance and rehabilitation scenariosfor the pavement network. The effect of different budget scenarios on the weighted averagecondition of the network over a 20 year analysis period was determined both when preventivemaintenance was incorporated and when only major rehabilitation (e.g. overlays) was conducted.The results indicated that implementing a PMS in the Town of Christiansburg can greatlysupport the town engineers in determining the optimal work types and work scenarios for long16term budgeting and planning. Furthermore, it was found that implementing a preventivemaintenance strategy into the work conducted on the network has the potential to significantlyreduce the cost of maintaining the network at a high condition rating.