Road Pavements and New Approaches IPWEA CONFRENCE David

Road Pavements and New Approaches! IPWEA CONFRENCE David Moloney Director Infrastructure - Southern Grampians Shire

Agenda Maintenance the New Capital Pavement Preservation Maintenance integration into a pavement mgt system

37, 000 Kilometres Travelled Vancouve r

Australia’s Local Road Conditions Condition – the physical condition of the infrastructure that allows it to meet the intended service level. 11% or $47 billion is in poor condition and require renewal or upgrade. Source: Australian Local Government Association – National State of the Assets Report 2015

Maintenance the New Capital Traditionally the capital program restores or increases pavement life Generally applied after some kind of structural failure in the pavement High cost treatments used Maintenance used to hold network together until money is found to rehabilitate the road

Maintenance the New Capital Philosophical change from maintenance holding a network together to maintenance treatments targeted at increasing the life of the pavement Achieved through a targeted programmed approach using a pavement preservation strategy

Typical Pavement Performance Curve

Effect of Low cost Maintenance

Pavement Preservation The US Federal Highways Administration (FHWA) defines Pavement Preservation as: “. . a program employing a network level, long- term strategy that enhances pavement performance by using an integrated, cost- effective set of practices that extend pavement life, improve safety and meet motorist expectations. " (Source: FHWA Pavement Preservation Expert Task Group)

Pavement Preservation The principal of pavement preservation is to: 1. Take a long term view of the road network 2. Deliver a whole of network programme that is not just about fixing structural problems but rather preventing them, 3. Keep good pavements in good condition.

Pavement Preservation “Right Treatment, Right Road, Right Time”

Pavement Preservation generally consists of: 10% Reactive Maintenance / 90% Programmed Maintenance Low Cost treatments on Good Pavements Focused on surface defects / non structural problems

Integration into a PMS Establish whole of life plan for each pavement (right time) Establish this plan within the PMS to under take a whole of network analysis (right road) Implement low cost treatments (right treatment)

Cost of Programmed Mtce

Pavement Condition Affects Vehicle Operating Cost (Seattle DOT)

Pavement Treatments

Ultra Thin Friction Course

High Performance Thin Overlay

Fiber Seal Surface Treatment

Micro and Slurry Seal

Scrub Seal

Cold In-place Recycling (CIR)

Hot In-place Recycling (HIR)

Summary Maintenance the New Capital Pavement Preservation Maintenance integration into a pavement mgt system