Pavement Asset Management Decision Support Tools: Ohio Department of Transportation Case Study

Transcription

1 Pavement Asset Management Decision Suort Tools: Ohio Deartment of Transortation Case Study Eddie Chou Professor of Civil Engineering The University of Toledo Andrew Williams Administrator, Office of Technical Services The Ohio Deartment of Transortation TRB 9th National Conference on Transortation Asset Management Aril 16-18, 2012, San Diego, California

2 Introduction Aging avement network and tight budget at most highway agencies Demonstrated otimal use of M&R dollars has become necessary amid calls for transarency and accountability Ohio DOT has develoed decision suort tools for avement asset management through research rojects Exanding from avement to bridges and other assets Pilot for web access of information and tools 2

3 Dashboard Condition Reorting

4 Condition of Different Systems

5 Average Treatment Performance

6 Pavement Condition History

7 Network Level Otimization Suorts high level asset management decisions Estimate the minimum budget required to achieve a desired condition level Maximize the benefits for a given amount of budget Determine treatment olicy and budget allocation

8 Network Level Otimization Condition Classification Historical Pavement Condition Project History Treatment Classification Markov Prediction Model Current Pavement Condition Allowable Treatments Condition Target Linear Programming Otimization Model 1. Minimize Total Cost 2. Maximize Network Condition Treatment Unit Cost Available Budget Required Minimum Budget Otimal Treatment Policy & Budget Allocation Network Condition Prediction 8

9 Markov Prediction Model P = 0.7 P = 0. 2 P = P14 = P = Excellent 2. Good 3. Fair 4. Poor 5. Very Poor Markov Transition Probability Matrix: P =

10 Markov Prediction Model System riority: General and Priority Pavement tye: Concrete, Flexible and Comosite Reair treatment: Preventive Maintenance, Thin Overlay, Minor Rehab and Major Rehab = 24 avement grous are formed Treatment Matrix Excellent Good Fair Poor Very Poor Excellent Good Fair Poor Very Poor Do Nothing Matrix Excellent Good Fair Poor Very Poor Excellent Good Fair Poor Very Poor

11 Performance vs. Treatment Cost PCR Pavement Condition Deterioration Trend $ Pavement Age $ Minor Rehabilitation Major Rehabilitation Deficiency Threshold 11

12 Determination of Treatment Policy Current Network Condition Predicted Performance Condition Target Treatment Otions & Cost Otimization Condition Otimal Treatment Policy Do Nothing Recommended Treatment PM Thin Overlay Minor Major Excellent 100% 0% 0% 0% 0% Good 100% 0% 0% 0% 0% Fair 31% 69% 0% 0% 0% Poor 0% 0% 0% 100% 0% Very Poor 0% 0% 0% 0% 100% $ Required Network Budget

13 Minimum Budget Required to Achieve a Condition Level 3.0% Condition Target Deficiency Level 2.0% 1.0% $ Budget? 0.0% Year

14 Recommended Treatment Budget and Allocation Budget ($ Million) Year PM Thin Overlay Minor Rehab Major Rehab

15 Corresonding Pavement Condition Distribution 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Year Very Poor Poor Fair Good Excellent

16 Budget Allocation among Treatments to Achieve the Best Condition Level Budget $140 Million Allocation? Condition?

17 Use of Network Otimization Network otimization can be used as a decision making tool to answer what-if questions regarding: Imact of different condition targets Imact of different funding levels Imact of different budget allocation Imact of different reair treatment olicy

18 Deficiency Level Versus Average Annualized Exenditure $20 Average Annualized Exenditure Per Lane Mile ($1,000) $18 $16 $14 $12 $10 $8 Priority System General System $6 0% 1% 2% 3% 4% 5% 6% 7% 8% 9% 10% Deficiency Level

19 Future Directions: Transortation Assets Management opavement opedestrian Facilities oriver Ports oparks obike Facilities otransit Lines obridges orail Lines

20 Pavement Management Develoment Markov Forecast Road Inventory Decision Trees Pavement Condition District Work lans Caital Projects Maintenance Projects

21 PMS Data Process DoIT Suort 1. DoIT will transfer Pavement Databases needed for analysis into Sybase. DoIT Suort 2. DoIT will rovide GQL access to those basic databases on the PMS model. 3. Pavement Engineering will rovide DoIT with the avement management logic needed for rogramming analysis tools. 4. Pavement Engineering and DoIT will develo an udate lan for all avement databases. PMS PCR Roughness Skid Coring Analysis (PMS Software) BTRS (RI,.01, Log file, etc.) Analyze Data List Projects/ Treatments Budget Allocation (PMS Software) District Analysis Scoing Muliti Year Program (PMS Software) Feedback Ellis Project Tracking TMS DoIT Extraction Pavement History Database DoIT Extraction CMS 21

22 Systems Conditions State Average PCR for each System Over Time Average PCR Year State Avg Priority Avg Urban Avg General Avg

23 Integrated Decision Suort Average Conditions at Rehabilitation General System Flexible Pavements Activity 50 and Activity 60 from 1985 to 2010 District PCR Prior CRD Prior STRD Prior Raveling Bleeding Patching Debonding Crack Sealing Defic Rutting Settlements Corrugations Wheel Track Cracking Block and Transverse Cracking Longitudinal Cracking Edge Cracking Random Cracking Thermal cracking Thickness Added Thickness Removed Age at Reair Age at Next Reair

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29 Pavement Summary 3 ODOT - Priority System ODOT - General ODOT - Urban % of Accetable Pavement 100% 98% 96% 94% 92% 90% 88% 97.9% Goal: 95% % of Accetable Pavement 100% 98% 96% 94% 92% 90% 88% Goal: 90% 97.3% % of Accetable Pavement 100% 98% 96% 94% 92% 90% 88% Goal: 90% 97.5% 86% 86% 86% 84% 84% 84% 82% 82% 82% 80% SFY % SFY % SFY

30 Where are we going? Currently Imlementing a Commercial Pavement Management System (Deighton System) Currently develoing an integrated asset management system rototye through the University of Toledo Currently Imlementing Web-GIS alication for dislaying, distributing, and analyzing avement and other assets Currently develoing the framework for asset management database (consolidated database, COD) Performance Based Management Return on Investment Management Integrated System Suort Tools World Class Transortation System

31 Thank You!