1 Asset Management and Multi-Year Programming Christopher R. Bennett University of Auckland Highway and Traffic Consultants Ltd.

2 Operational Objective A safe and efficient local roading infrastructure which contributes to the successful social and economic development of New Zealand Transit NZ Annual Report

3 Road Asset Management Defining activities Planning Allocating resources Organising and motivating personnel Controlling work Monitoring and evaluating performance Feeding back results to seek improvements

4 Transit Local Road Expenditure

5 Transit SH Expenditure

6 Impacts Level of service and road condition National development and economy Road user costs Accident levels and costs Environmental degradation Road administration costs

7 World Bank Study Conducted in 1988 in 85 countries One-quarter of paved roads and one- third of unpaved roads needed reconstruction at cost of $US billion Timely preventative measures costing less than $US 12 billion would have saved roads

8 The Causes? Economic and Institutional –Improper Planning –Inadequate Funding

9 Not Just Developing Countries!

10 Road Maintenance Issues Delivering a defined quality of service Resources of people, materials and equipment Activities and procedures Location on the road network Timing of interventions

11 Management Systems Ensure rational and efficient allocations of resources Maximise benefits from investments Need to consider entire network and optimise given budget constraints

12 Multi-Year Programming Forward investment programme for network Testing of funding implications Based on either historical or anticipated (predicted) needs

13 Historical Approach “… [this] approach presupposes a fairly constant level of needs over time. However, we know that roads deteriorate at a rate that varies over time: initially the deterioration is imperceptible and, once distresses appear, it may increase quickly or slowly depending on several factors. Thus, in reality, road needs are not constant over time, [particularly since] a network tends to be heterogeneous. Needs can escalate sharply if maintenance is neglected.” W.D.O. Paterson (1988) Road Management Systems: A Guide and A Pilot Study

14 Predictive Approach Several methods –Based on current age/condition –Based on deterministic models –Based on probabilistic models Project or Network Level Allows testing of implications of funding and estimating condition

15 Funding Implications Important element of multi-year programming Can test various ‘what if’ scenarios Different performance measures

16 Predicted Condition

17 Travel Effects

18 Deighton Water Model