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Pages 13-23

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From page 13...
... 13   The state of the practice, summarized here, documents how existing and potential approaches can be used to integrate enterprise-, network-, and program-level risk analysis. The research team reviewed effective processes by summarizing the legislative requirements and the risk management practices documented in the states' TAMPs and interviewing selected state agency officials who indicated they had notable risk management practices.
From page 14...
... 14 Risk Assessment Techniques for Transportation Asset Management: Conduct of Research The survey requested that state DOTs rate their agencies' asset risk management maturity based on the following general guidelines: • Emerging: There is an understanding of risk management but there has been no implementation yet. • Low: The agency conducts risk assessment but does not incorporate risk management into decisions yet.
From page 15...
... Summary of State of the Practice 15   • What could be described as "qualitative risk management," in which the judgments of staff are used to assess risks, was common in the TAMPs. Common risks cited in the TAMPs included – Uncertain funding and purchasing power – Loss of staff expertise – Likelihood of diminishing political or organizational support for asset management – External threats such as rising sea levels, higher temperatures, and more intense rainfall – Locally controlled National Highway System (NHS)
From page 16...
... 16 Risk Assessment Techniques for Transportation Asset Management: Conduct of Research • Developing an environmental resiliency tool that uses a visualization application to map assets where sea level rise affects bridge and pavement investments • Creating a corridor risk management process that could assess risks such as flooding, rockfall, earthquakes, and wildfires by corridor • Using GIS to review vulnerability data and analyze the sea level rise impacts in the project environmental review process • Prioritizing bridges prone to scour risk • Developing metrics and models that incorporate risk, such as a level of risk score for geohazard sites and a pavement model that makes different investment decisions based on roadway category • Using a slope vulnerability model in GIS to identify at-risk slopes • Using GIS to identify geographic areas across the state to assess locations in the transportation network that may be more vulnerable to weather-related risks • Incorporating risks into designs and specifications for sizing culverts • Developing a culvert prioritization tool that creates a vulnerability index based on streamflow and geomorphology • Calculating risk scores for roadway locations subject to rockfall and mitigating high-risk areas, subject to funding availability • Developing a statewide climate change vulnerability assessment tool that will include maps and, potentially, new data sets that identify high-risk corridors and those assets most at risk • Deploying a web-based application to identify bridges, culverts, and road embankments vulnerable to damage from floods, estimate risk based on the vulnerability and criticality of roadway segments, and identify potential mitigation measures based on the factors driving the vulnerability • Conducting FHWA extreme weather risk pilots • Developing an extreme weather risk register 5.4 State of the Practice for Incorporating Risk Analysis into Management Systems The surveys, literature reviews, and interviews did not reveal that many agencies were using their management systems to model risk. Nor was there evidence of risk analysis using systems other than BMSs and PMSs.
From page 17...
... Summary of State of the Practice 17   Management," there is a well-documented framework that could be incorporated into bridge management once agencies are mature enough with their bridge management implementations. States reported several relevant uses of management systems: • DOTs can use the risk assessment capabilities within BMSs and PMSs.
From page 18...
... 18 Risk Assessment Techniques for Transportation Asset Management: Conduct of Research single index (also called a utility function) that can be maximized or minimized over time using optimization analysis.
From page 19...
... Summary of State of the Practice 19   The Minnesota Department of Transportation's (MnDOT) Bridge Replacement and Improvement Management System includes a risk assessment element called the Bridge Planning Index (BPI)
From page 20...
... 20 Risk Assessment Techniques for Transportation Asset Management: Conduct of Research watershed, or the sole access for emergency vehicles. If any of those conditions are met, the risks they pose are considered in the project development or maintenance processes.
From page 21...
... Summary of State of the Practice 21   rockfall, avalanche, debris flow, and earthquakes. The identified risks were noted and whether to mitigate them will be considered when projects are developed at those locations.
From page 22...
... 22 Risk Assessment Techniques for Transportation Asset Management: Conduct of Research Figure 5-1 illustrates the values as of Quarter 3 of 2021 from the FHWA Construction Cost Index, a composite index of highway construction costs. The sharp spikes in prices seen from 2005 to 2008 and from 2017 to 2021 illustrate the unpredictable nature of highway construction inflation.
From page 23...
... Summary of State of the Practice 23   identified strategies to protect assets from climatic or environmental threats. Also, the risk analyses used different terminology than did the climate threat analyses, even when discussing similar risks.

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