Marlborough District Council Roading Assets - Activity Management Plan 2015 - 2018 SECTION 1 EXECUTIVE SUMMARY Marlborough’s current philosophy is to invest more into pavement repair maintenance activities and delay renewal activites as long as possible, whereas other authorities follow a different philospohy and have reduced maintenance activity and higher renewal activity. Both approaches are valid and can only be compared when whole of life costs are anaylsed, rather than annual work category expenditure rates compared. 1.6.1.11 Issues and Risks Issues During the preparation of this plan the following items have been identified as requiring further investigation and refinement as part of the improvement plan Consider and verify RAMM default surfacing design lives; Consideration of the appropriateness of the LoS for pot holes and detritus on sealed surfaces particularly in urban areas Performance monitoring, alignment of RAMM rating, dTIMS modelling, Annual Plan preparation etc.; Improvement of the pavement depth and strength data in RAMM to refine modelling; Resurfacing strategy, needs development and refining Formalisation FWP liaison with MDC sections and service authorities to prevent ‘seal it, dig it up’ syndrome. Risks The major risks identified with managing sealed roads are: Treatment Asset Type Event Failure Mode Risk Effect Strategy Extreme Flood weather Floods M Reinstate Patrols Extreme Flood weather Floods / slips H Road close / reinstate Patrols Incident Crashes Block/damage road L Road close / clean-up Response Earthquake Block/damage road M Road Close /reinstate Poor const./ Contract Maint. Pavement Failure L Repair requirment Sealed High PS. in Roads Temperature Bleeding Bitumen H Add Sealing Chip contracts Change in Council loading Pavement Failure L Rehabilitate Policy Change in Council Volume Edge break L Seal Widening Policy Vandals PS. In /Acc. Spills loss of traction H Repair / clean-up contracts Poor AWT performance Poor ride / rough M Smoothing treatment programme Risks Table 6.1.12a 1.6.1.12 Resilience Resilience is the ability of a network to recover, and operate at the desired level of service, when subjected to significant disruptions and shifting circumstances. 30 September 2014 Page 48 of Section 1