City of Stirling Transport Asset Managment Plan

5.1.2 Asset capacity and performance Transport assets tend to have long useful lives, up to 50-60 years for some components. However, allowances for replacement due to deficiencies in capacity and performance must be made in any program. The City’s services are generally provided to meet design standards where these are available. The design standards ensure that the asset is capable of reaching its design life.

Strategy. Other deficiencies are shown in Table 5.3. The City continuously monitors and evaluates the condition, capacity, and safety of the road and pathway network. Service deficiencies are identified from: • Analysis of the capacity and safety performance of the transport network • Previous history of asset failure and historical performance of treatments.

Generally, with transport assets, this relates to: • The ability of the asset to convey the required volume of traffic • The durability of the asset to withstand the traffic within the design life. Areas where deficiencies in service performance exist have been included in the Rights of Way Management Strategy, the New Footpath Policy, the Traffic Management Warrants Policy and the Integrated Transport

Location

Service deficiency

Overall road network

With regards to the current growth being experienced within the City, some roads will require upgrading to cater for increased vehicle loads and traffic volumes. Some shared pathways are suspected to be running at capacity during peak hours and analysis is required on these areas of the network. In other areas, gaps in the network need to be reviewed which will encourage the uptake of cycling.

Key shared pathways

Table 5.3 Known service performance deficiencies

5.1.3 Asset condition The process of condition rating of transport assets is detailed in the City’s Transport Business Process Manual. The condition of the road network is assessed taking into account the pavement and wearing surface of the road and measure the severity and extent of cracking, pavement defects, pavement rutting, surface texture and asphalt condition.

The condition of the pathway network is assessed by measuring the severities and extents of cracking, distortion and displacement. The condition is measured using a five-tier rating system as described in Table 5.4.

Condition index

Rating

Description

1

Very Good Asset in sound physical condition. Insignificant deterioration visible. Only planned maintenance required Acceptable physical condition with minor deterioration. Minor maintenance required plus preventative maintenance Moderate to significant deterioration evident but asset still functions safely and at adequate level of service. Minor to moderate maintenance required to address defects Serious deterioration and significant. Substantial work required in short term to keep asset safe and operational Asset structure failed or failure is imminent. Possibly presenting safety risk. Major work or replacement required Fair Poor Very Poor Good

2

3

4

5

Table 5.4 Condition ratings

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