PIMA COUNTY TRANSPORTATION ADVISORY COMMITTEE FY19-20 Pavement Program Roadway Prioritization MARCH 26, 2019 PROGRAM OVERVIEW FINAL PRESENTATION 03/26/2019 Page 1 of 16
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PIMA COUNTY TRANSPORTATION ADVISORY COMMITTEE
FY19-20 Pavement Program Roadway Prioritization
MARCH 26, 2019
PROGRAM OVERVIEW
FINAL PRESENTATION
03/26/2019 Page 1 of 16
Prioritization Methodology
• Worst First (Repair Only)
• Maximize Miles (Preservation Only)
• Combination (Keep Good Roads Good)
FINAL PRESENTATION
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Two Programs – Two Different Methodologies• RLRRP (Property Tax) – Maximize Miles (local roads only)
• HURF Bond (DOT-59) – Worst First (Arterials & Collectors)
System/Network Based Approach
Need a tool that is:• Robust (Roughly 1900 miles, mixed classification)• Reacts to funding changes• Objective – looks at road condition, maintains overall
system condition index
FINAL PRESENTATION
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StreetSaver
• Robust:• Developed by MTC (Metropolitan Transportation
Commission), the PAG of the San Francisco Bay Area to help maintain city and county roadways and street
• Reacts to funding changes:• Flexible to encompass available funding per jursidiction
• Objective:• Uses road condition index, effective treatments, network
level assignment• Compares different scenarios to show impact of
decisions
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Example Graph:Impact of Funding Levels on Condition
Illustration:Effectiveness Based on PCI-Time Curve
StreetSaver
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Example Graph:Impact of Funding Levels on Deferred Need
Example Graph:Effect of Funding Levels on Backlog
StreetSaver
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Current Network Dashboard
FINAL PRESENTATION
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Current PCI Breakpoints
FINAL PRESENTATION
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Current Decision Tree
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Scenarios
• Ran 5 different scenarios of the projected 5-year pavement preservation contracts allocations
• Scenario 1 – Arterials & Collectors
• Scenario 2 – Arterials & Collectors, Split by BOS District
• Scenario 3 – All Roads, Split by Classification
• Scenario 4 – All Roads, Split by BOS District & Classification
• Scenario 5 – All Roads StreetSaver Best Practice
FINAL PRESENTATION
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Scenario 1
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Scenario 2
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Scenario 3
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Scenario 4
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Scenario 5
FINAL PRESENTATION
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