Improving the Utilisation of Pavement Maintenance Funds



Improving the Utilisation of Pavement Maintenance Funds

Authors

SNARAF E, Cairo University, Egypt

Description

Several highway agencies tend to delay the application of preventive maintenance to their pavements due to budget constraints. Such decisions, unfortunately, are taken without a careful analysis of the consequences of such delay. The main objective of thi

Abstract

Several highway agencies tend to delay the application of preventive maintenance to their pavements due to budget constraints. Such decisions, unfortunately, are taken without a careful analysis of the consequences of such delay. The main objective of this paper is to present a procedure developed to quantify the economic effect of deferring pavement preventive maintenance on maintenance costs. The development and application of the procedure is based on data collected from the Riyadh area road network. In this research a procedure has been developed to relate pavement maintenance costs to pavement condition. The procedure was fully computerized through a Data Base model. In developing this model, several subsystems were developed following the general components of Pavement Maintenance Management Systems (PMMS). Those subsystems are:

1. A subsystem to identify and code the network

2. A subsystem to evaluate the pavement condition in terms of the types, severity levels and quantities of the existing distresses

3. A subsystem to identify the maintenance needs based on pavement condition (decision tree)

4. A subsystem to establish statistical performance models

5. A subsystem to conduct an economic analysis to determine the Equivalent Uniform Annual Cost (EUAC) for any maintenance alternative

The main conclusion of this research is that deleting pavement preventive maintenance can lead to a substantial increase in the required maintenance costs. On the average, the annual maintenance costs of pavements in the very poor condition wouid be as much as four times the costs if pavements were maintained while they are in the good condition. The study also identified the critical time "age", for different pavement types, after which the required maintenance cost increases at a very rapid rate.

Publisher

Association for European Transport