2017 Washington State Report AWS
2017 Washington State Report
David Luhr Pavement Management Engineer Washington State DOT 1
Cost-Effectiveness is Key Performance Measure • Dollars per lane mile per year ($/LMY) • Pavement Preservation becomes high priority compared to more expensive treatments
Cost Effectiveness Examples Const. Project Type Cost($/LM) Crack Seal $5,000 Chip Seal $45,000 Grinding (PCCP) $150,000 Rehab (ACP) Reconst (ACP) Reconst.(PCCP)
$250,000 $900,000 $2,500,000
LMY gained 3 9 15
Annual Cost $/LMY $ 1,667 $ 5,000 $10,000
14 20 50
$17,857 $45,000 $50,000
Washington State procedures summarized in: “Cost-Effective Performance Management for Washington State Pavement Assets”, Transportation Research Record 2639, TRB, Washington, DC 2017
“Triggers” for Preservation Decisions • Only “triggers” that exist are for rehabilitation, based on a) cracking, b) rutting, and c) roughness • Want to move preservation treatments higher on the performance curve
Preservation Treatment Decisions Do Nothing ?? Maintenance ($) ?? Preventive
Strategic
Reactive
Condition Indexes
100 Rehab ($$$)??
Optimum time for Rehab Index value 45 ~ 50
Excessive Vehicle Operating Costs Excessive Agency Construction Costs
0 Years
Reconstruction ?? ($$$$$$)
Integrating Maintenance and Pavement Management • Preservation treatments paid for by Maintenance (Operating Budget) and Capital Program • Making progress over last 5 – 6 years in integrating maintenance better with pavement management
Developing Estimates of Maintenance Need
Monitoring of Treatment Segments
David Luhr State Pavement Management Engineer [email protected] (360) 709-5405
10
David Luhr Pavement Management Engineer Washington State DOT 1
Cost-Effectiveness is Key Performance Measure • Dollars per lane mile per year ($/LMY) • Pavement Preservation becomes high priority compared to more expensive treatments
Cost Effectiveness Examples Const. Project Type Cost($/LM) Crack Seal $5,000 Chip Seal $45,000 Grinding (PCCP) $150,000 Rehab (ACP) Reconst (ACP) Reconst.(PCCP)
$250,000 $900,000 $2,500,000
LMY gained 3 9 15
Annual Cost $/LMY $ 1,667 $ 5,000 $10,000
14 20 50
$17,857 $45,000 $50,000
Washington State procedures summarized in: “Cost-Effective Performance Management for Washington State Pavement Assets”, Transportation Research Record 2639, TRB, Washington, DC 2017
“Triggers” for Preservation Decisions • Only “triggers” that exist are for rehabilitation, based on a) cracking, b) rutting, and c) roughness • Want to move preservation treatments higher on the performance curve
Preservation Treatment Decisions Do Nothing ?? Maintenance ($) ?? Preventive
Strategic
Reactive
Condition Indexes
100 Rehab ($$$)??
Optimum time for Rehab Index value 45 ~ 50
Excessive Vehicle Operating Costs Excessive Agency Construction Costs
0 Years
Reconstruction ?? ($$$$$$)
Integrating Maintenance and Pavement Management • Preservation treatments paid for by Maintenance (Operating Budget) and Capital Program • Making progress over last 5 – 6 years in integrating maintenance better with pavement management
Developing Estimates of Maintenance Need
Monitoring of Treatment Segments
David Luhr State Pavement Management Engineer [email protected] (360) 709-5405
10
