An Asset-Management Framework for the Interstate Highway System (2009) / Chapter Skim
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Pages 36-43
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From page 36... ...
However, there are no standard measures defined for managing IHS assets. The remainder of this chapter describes the approach used to evaluate different performance measures for inclusion in the Interstate Asset Management Framework and presents a recommended set of core and comprehensive measures.
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The approach to developing a set of performance measures for use in reporting IHS conditions in an Interstate Asset Management Plan has been adapted from this framework. As indicated in Figure 5.4, identifying
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Five basic categories of measures were established for supporting the Interstate Asset Management Framework. These categories include: • Preservation -- Measures in this category characterize the physical condition of transportation assets; • Mobility -- This category describes how well the transportation network is performing its basic function of supporting transport, and includes measures of throughput and congestion; • Safety -- This category includes measures of crashes and fatalities, as well as other measures related to safety; • Environment -- Measures in this category characterize the environmental impact of the IHS, and the degree to which an IHS owner is meeting its environmental goals; and 38 Figure 5.3.
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From page 39... ...
• How well do the existing measures align with the available data described in Chapter 4? Note that the availability of data for calculating a measure, or lack thereof, is not in and of itself an indication of whether a measure is needed to support the Interstate Asset Management Framework.
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From page 40... ...
Ideally, every IHS owner would report the core measures described here, at a minimum, and plan in the future for collecting and reporting the full set of comprehensive measures. 5.3 Recommended Measures for IHS Asset Management Table 5.1 details the core set of performance measures recommended for the Interstate Asset Management Framework.
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From page 41... ...
However, the fact that all assets are important does not necessarily mean that it is vital for an IHS owner to capture and report performance measures for all IHS assets in the near term as part of its Interstate Asset Management Plan, possibly diverting resources from other important activities to do so. Further, it is assumed that IHS owners do now and will continue to address public safety issues (e.g., pending failure of a structure)
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From page 42... ...
Category Asset Type Measure Type Measure Shoulders Asset Performance Percent functioning as intended Tunnels Asset Performance Percent functioning as intended Culverts/drainage structures Asset Performance Percent functioning as intended Noise barrier walls Asset Performance Percent functioning as intended Retaining walls Asset Performance Percent functioning as intended Overhead sign structures Asset Performance Percent functioning as intended High mast light poles Asset Performance Percent functioning as intended Lighting Asset Performance Percent functioning as intended Median barriers Asset Performance Percent functioning as intended Impact attenuators Asset Performance Percent functioning as intended Surveillance and monitoring equipment Asset Performance Percent functioning as intended Signal and control equipment Asset Performance Percent functioning as intended Rest areas Asset Performance Percent functioning as intended Toll plazas Asset Performance Percent functioning as intended Weigh stations Asset Performance Percent functioning as intended Maintenance depots Asset Performance Percent functioning as intended Pump houses Asset Performance Percent functioning as intended Preservation Communication facilities Asset Performance Percent functioning as intended Mobility Winter Maintenance Average time to restore pavement surface Schedule Adherence Percentage of total projects finished on or before original scheduled contract completion date Delivery Cost Control Annual ratio of actual construction cost to bid amount
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From page 43... ...
Research is ongoing to develop level of service standards for asset management as part of NCHRP Project 20-74(A)
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