“Surgical Spending” for Pavement Preservation · from Surface Score History 0 ... Lane Miles...

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“Surgical Spending” forPavement Preservation

2007 School for Highway Superintendents

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Outline

• How we know which roads to fix.• Windows of opportunity for treatment.• Treat the pavement early.• Less expensive to keep good roads good.• Tools in the toolbox

How do we decidewhich roads to fix?

Pavement Management

The Right Pavementwith the Right Treatment

at the Right Time

Pavement Management

How do we identifycandidates for work?

Network Level Windshield Survey

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Pavement Surface Score

• 10 – 9: Excellent• 7 – 8: Good• 6: Fair• <5: Poor

89/10 – Excellent

98 - Good

107 - Good

116 - Fair

125 - Poor

134 - Poor

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E-Score Hardware

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Pavement Surface Score

10 – 9: Do Nothing8: Crack Seal7: PM Paving6: Rehab

<5: Major Rehab/Replace

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Pavement Surface Score

10 – 9: Do Nothing8: Crack Seal7: PM Paving6: Rehab

<5: Major Rehab/Replace

Pavement Management

Pavement Preservation Strategy

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Typical Pavement Deterioration Curvefrom Surface Score History

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Flex/Overlay

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What are we trying to do with Preventive Maintenance?

• Seal cracks to keep water out

• Rejuvenate a weathered surface

• Prolong life of the pavement

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Side Benefits ofPreventive Maintenance

• Restores friction

• Some improvement to ride quality

• Some repair to rutting

Pavement Management

Pavement Preservation Strategy

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Pavement Performance Curveand Windows of OpportunityDo Nothing

Non-Paving PM

PM Paving

Multi-Course

Major Rehab/Recon

PM Overlay by Initial Surface Score

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Project Age

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core Score 6

Score 7

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$25k $25k $100k

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$1M

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$150k $1M

Poor Fair Good Excel

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Poor Fair Good Excel

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Pavement Preservation

Poor Fair Good Excel

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Pavement Preservation

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Pavement Preservation

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Pavement Preservation

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Pavement Preservation

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Pavement Preservation

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Pavement Preservation

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October 3, 2000 17th Annual AGC Texas Trade &Equipment Show

Neil Insert Picture on this slide

Micro-Surfacing Operation

NovaChip

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Type I

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Type II

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Pavement Preservation Tools• Crack Sealing• Chip Seal• Quick-set Slurry• Microsurfacing• Paver-Placed

Surface Treatment• Single Course HMA• Mill and Fill• Cold-in-Place

Recycling

Far less expensive to keep good pavements good.

Treat the pavement early before distress becomes severe.

The time window is narrow for optimal performance.

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Poor Fair Good Excel

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Key Concept of Pavement Preservation

Questions?

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Rick BennettPavement Management518-485-8976rbennett@dot.state.ny.us