Pavement Management System Presentation to Township of Langley Council, June 22, 2009

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A presentation on the state of Langley's roads from Gary St. Michel of EBA Engineering Consultants.

A presentation on the state of Langley's roads from Gary St. Michel of EBA Engineering Consultants.

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  • 1.  
  • 2. The Township of Langley 2008 Pavement Management System Study Prepared by EBA Engineering Consultants Ltd.
  • 3. Contents
    • Project Background
    • Data Collection
    • Road Network Present Conditions in 2008
    • Road Network Assessment and Comparison to other Agencies
    • Highway Development and Management (HDM) Distress Prediction Modeling
    • Road Network Predicted Condition in 2018
    • Analysis Inputs
    • Analysis Results
      • Road Network Predicted Condition at Current Funding Levels
      • Road Network Predicted Condition at Recommended Funding Levels
  • 4. Project Background
    • Township of Langley’s Pavement Management History
    • Pavement Management System Installed in 2002/2003;
    • The last full Pavement Condition Surveys were conducted in:
      • 2005 MRN Roads (TransLink);
      • 2007 Major Roads (Arterial, Collector & Grid roads);
      • 2005 & 2006 Local roads (Minor roads).
    • The objectives of this study are:
    • Update analysis to reflect current construction pricing;
    • Analysis of Major, local and MRN roads;
    • Determine the optimal annual funding level that will indefinitely sustain the
    • quality and value of the pavement network; and
    • Integrate all pavement condition and analysis results in the Township’s GIS;
    • Update the City’s in-house systems to incorporate latest work.
  • 5. Pavement Inventory
    • Township of Langley has approximately 930 centreline km of road
    • (813 centreline-km of Paved road considered in analysis)
    Major Roads Analysis Local Roads Analysis * Includes Hwy 1 EB and WB, Hwy 10, unsurveyed parts of 264 St & 264 St Diversion MRN Roads Analysis 426 ) Local 121 Grid 59 ) MRN 106 Collector 101 Arterial Length (cl-km) Class
  • 6. Township of Langley’s Road Network Road Network Classification Provincial Highways MRN Routes Arterial Routes Collector Routes Grid Local Routes Private/ new locals (Not Surveyed) Municipal Boundary
  • 7. All Cracked Area (ACA) as a Measure of Pavement Condition 100% 30% V Poor 30% 10% Poor 10% 5% Fair 5% 1% Good 1% 0% V Good Colour To ACA From ACA Condition
  • 8. Data Collection Cracking = 0 - 1 % Preventative Maintenance (crack sealing) $1.70 - $3.00/m 2 Cracking = 1 - 10 % Overlay, Grind and Patch $15 - $30/m 2
  • 9. Data Collection Cracking = 10 - 30% (Overlay, Grind and Patch) $30 - $40/m 2 Cracking > 30% (Replace Asphalt) $40 - $65/m 2
  • 10. Cracking (ACA) on Major Roads – 2007/08 0 – 1% (V Good) = 133 km 40% 1 – 5% (Good) = 98 km 30% 5 – 10% (Fair) = 42 km 13% 10 – 30% (Poor) = 50 km 15% Avg. Cracking measured in 2007 = 5.5% 30 – 100% (V Poor) = 5 km 2% Total = 328 km Avg. Cracking after 2008 Paving = 5.0%
  • 11. Recommended Funding vs Actual (major roads)
    • Average Cracking in 2000 = 5.2%
    • Average Cracking in 2003 = 4.7%
    • Recommended Funding in 2003 = $2.4 million/year
    • Actual Funding 2003 thru 2007 = $1.9 million/year * (average)
    • Measured cracking percentage in 2007 = 5.5%
    • Cracking % After 2008 Paving Programme = 5.0%
    * 31 km out of the total 328 km of Major roads were re-surfaced between the 2003 survey and the 2007 survey
  • 12. Comparison to Other Agencies How does this compare to elsewhere in terms of Cracking ?? Using the same data collection / interpretation
      • British Columbia (major roads only) Km
      • Maple Ridge (2007) 8.8 % 154
      • Abbotsford (2003) 7.8 % 304
      • Coquitlam (2007) 5.7 % 119
      • Surrey (2007) 5.6 % 490
      • Township (2008) 5.0 % 328
      • Township (2003) 4.7 % 328
      • New Westminster (2006) 4.6 % 28
      • Richmond (2004) 3.7 % 98
      • Delta (2006) 2.4 % 113
  • 13. Cracking (ACA) on MRN Roads 2005 0 – 1% (V Good) = 43 km 1 – 5% (Good) = 14 km 5 – 10% (Fair) = 2 km 10 – 30% (Poor) = 0 km Avg. Cracking = 1.0% 30 – 100% (V Poor) = 0 km
  • 14. Cracking (ACA) on Local Roads - 2008 0 – 1% (V Good) = 156 km 1 – 5% (Good) = 125 km 5 – 10% (Fair) = 38 km 10 – 30% (Poor) = 72 km Avg. Cracking = 8.8% * 30 – 100% (V Poor) = 35 km Total = 426 km * Predicted condition in 2008 based on 2005/06 data
  • 15. Analysis Inputs Example Pavement Strategies (combinations of treatments) 13 Years 10 Years 20 Years
  • 16. Analysis Inputs Using Life Cycle Cost Analysis Evaluated Several Strategies for Each Pavement Segment
    • Strategy is comprised of combinations of individual treatments and treatment application timings
    • For a given pavement there are hundreds potential preservation strategies.
  • 17. Analysis Results – Major Roads Deterioration 9% 16% 4% 6% 20% Cracking (ACA) % $2.0mill $3.0 mill $3.5 mill $4.0 mill $1.5 mill Recommended Recommended Actual Spending on annual maintenance for major roads is @ $250,000/ year Predicted
  • 18. Analysis Results – Local Roads Deterioration 4% 11% 15% Cracking (ACA) % $3.0 mill $3.5 mill $4.0 mill $2.5 mill Recommended Recommended 7% Actual spending on annual maintenance for local roads is @ $250,000/ year versus required $500,000/ year shown Predicted
  • 19. Cracking (ACA) on Major & Local Roads 2009 - 2025 Predicted condition in 2009 - 2025 Major: $2.0 million/ year Local: $2.0 million/ year Annual Spending: $4.0 million/ year
  • 20. Cracking (ACA) on Major & Local Roads - 2009 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 5.0 % = Local 8.8 % * Predicted condition in 2009
  • 21. Cracking (ACA) on Major & Local Roads - 2010 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 5.0 % = Local 9.3 % * Predicted condition in 2010
  • 22. Cracking (ACA) on Major & Local Roads - 2011 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 5.2 % = Local 9.7 % * Predicted condition in 2011
  • 23. Cracking (ACA) on Major & Local Roads - 2012 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 5.5 % = Local 10.2 % * Predicted condition in 2012
  • 24. Cracking (ACA) on Major & Local Roads - 2013 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 5.7 % = Local 10.6 % * Predicted condition in 2013
  • 25. Cracking (ACA) on Major & Local Roads - 2014 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 6.0 % = Local 11.1 % * Predicted condition in 2014
  • 26. Cracking (ACA) on Major & Local Roads - 2015 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 6.5 % = Local 11.6 % * Predicted condition in 2015
  • 27. Cracking (ACA) on Major & Local Roads - 2016 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 7.0 % = Local 12.0 % * Predicted condition in 2016
  • 28. Cracking (ACA) on Major & Local Roads - 2017 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 7.6 % = Local 12.7 % * Predicted condition in 2017
  • 29. Cracking (ACA) on Major & Local Roads - 2018 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 8.2 % = Local 13.4 % * Predicted condition in 2018
  • 30. Cracking (ACA) on Major & Local Roads - 2019 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 8.9 % = Local 14.0 % * Predicted condition in 2019
  • 31. Cracking (ACA) on Major & Local Roads - 2020 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 9.6 % = Local 14.9 % * Predicted condition in 2020
  • 32. Cracking (ACA) on Major & Local Roads - 2021 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 10.3 % = Local 15.8 % * Predicted condition in 2021
  • 33. Cracking (ACA) on Major & Local Roads - 2022 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 11.0 % = Local 16.7 % * Predicted condition in 2022
  • 34. Cracking (ACA) on Major & Local Roads - 2023 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 11.8 % = Local 17.4 % * Predicted condition in 2023
  • 35. Cracking (ACA) on Major & Local Roads - 2024 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 12.7 % = Local 18.1 % * Predicted condition in 2024
  • 36. Cracking (ACA) on Major & Local Roads - 2025 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 13.7 % = Local 19.1 % * Predicted condition in 2025
  • 37. Cracking (ACA) on Major & Local Roads 2025 Predicted condition in 2025 Major & Local: $500,000/ year Annual Spending (Do Minimum) :
  • 38. Cracking (ACA) on Major & Local Roads - 2025 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $500,000/ year *Avg. Cracking = Major 26.3% = Local 30.2% * Predicted condition in 15 years
  • 39. Pavement Asset Value Pavement Type Replacement 2008 Value 2018 Value (Recommended Budget) MRN Roads $ 74 million $ 66 million $ 66 million (at $1.3 million/ Year) Major Roads $151 million $136 million $133 million (at $4.0 million/ Year) Local Roads $110 million $ 85 million $ 85 million (at $4.0 million/ Year) $335 million $287 million $284 million
    • Recommended MRN Road Funding : 1.8% of Asset Value
    • Recommended Major Road Funding : 2.7% of Asset Value
    • Recommended Local Road Funding : 3.6% of Asset Value
    • Roads in good condition can be managed for between 2% and 2.5% of asset value
    • The local road funding could be reduced to $2.8 million/year once cracking is reduced to 4%
  • 40.  
  • 41. For Discussion
  • 42. Calculating Pavement Value Pavement value = Cost of Excavation and Compaction + cost of Subbase + cost of Base + cost of Asphalt Original Ground Excavation and Compaction Subbase Base Asphalt
  • 43. With time and traffic, pavement layers deteriorate Failure Rutting Cracking
  • 44. Calculating current pavement asset value cracking Original Pavement value minus the cost in any given year to restore the pavement to as new condition New Asphalt
  • 45. Pavement Asset Value
    • Pavement Type Length Replacement 2008 Value
    • MRN Roads 59 km $ 74 million $ 66 million
    • Major Roads 328 km $151 million $136 million
    • Local Roads 426 km $110 million $ 85 million
    • 813 km $335 million $287 million
  • 46. Distress Prediction Modeling World Bank Pavement Performance - Distress Prediction Modeling
    • Structure
    • Age
    • Traffic
    • Environment
    • Condition
    Crack Initiation Rutting Crack Progression Roughness Pot Holes Raveling
  • 47. Analysis Inputs Maintenance / Rehabilitation Treatments and Costs Used
    • Treatment Unit Cost
    • Crack Sealing $ 2.25/L-m
    • Skim Patching $14.00/m 2
    • Surface Treatment $ 8.00/m 2
    • Overlay (50 mm) $15.00/m 2
    • Grind and Patch (40 mm) $22.00/m 2
    • Grind and Patch (75 mm) $27.00/m 2
    • Mill/ Inlay (50 mm) $20.00/m 2
    • Reclaim $40.00/m 2
    • Reconstruction $60.00/m 2
    • Subsequent Rehabilitations $15.00/m 2 (no curb)
    • $20.00/m 2 (with curb)