Pavement 101 Presentation 10 17 08

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Sample presentation from Bucknam & Associates in relation to Infrastructure Management Services

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Pavement 101 Presentation 10 17 08

  1. 1. City of Rancho Santa Margarita PAVEMENT MANAGEMENT OVERVIEW October 22, 2008
  2. 2. <ul><li>Includes: </li></ul><ul><ul><li>Pavement </li></ul></ul><ul><ul><li>Curb and Gutter </li></ul></ul><ul><ul><li>Sidewalks </li></ul></ul><ul><ul><li>Storm Drains </li></ul></ul><ul><ul><li>Striping </li></ul></ul><ul><li>Does not Include: </li></ul><ul><ul><li>Trees </li></ul></ul><ul><ul><li>Irrigation </li></ul></ul><ul><ul><li>Utilities </li></ul></ul><ul><li>City’s Most Valuable Asset </li></ul>City of RSM Street System
  3. 3. <ul><li>Value of Pavement Alone (Replacement Cost) = $120 million dollars. </li></ul><ul><ul><li>18,000,000 x $6.50/sf </li></ul></ul><ul><li>Value of Entire Street System (Replacement Cost) exceeds $200 million dollars. </li></ul><ul><li>GASB 34 - Requires Public Agencies to Report on the value of Infrastructure Assets </li></ul>What is it worth?
  4. 4. Types of Street Pavement <ul><li>Portland Cement Concrete </li></ul><ul><li>Asphalt Concrete (Majority of RSM pavement) </li></ul><ul><li>Brick Pavers </li></ul>
  5. 5. Common Sources of Funding For Street Maintenance <ul><li>Gas Tax Revenue ($850,000 in FY 08/09) </li></ul><ul><li>Measure M Turnback ($551,554 in FY 08/09) </li></ul><ul><li>Proposition 42 (County) ($166,840 in FY 08/09) </li></ul><ul><li>Measure M GMA ($50,000 in FY 08/09) </li></ul><ul><li>Total in FY 2008/09 = $__________ </li></ul>
  6. 6. Funding Timelines For Street Maintenance Revenue <ul><li>Gas Tax Revenue (__ Years) </li></ul><ul><li>Measure M Turnback (__ Years) </li></ul><ul><li>Proposition 42 (County) (__ Years) </li></ul><ul><li>Measure M GMA (__ Years) </li></ul>
  7. 7. Less Common Sources of Funding For Street Maintenance <ul><ul><ul><li>Proposition 1B (State) – $799,000 in FY 07/08 </li></ul></ul></ul><ul><ul><ul><li>Proposition 1B (County) </li></ul></ul></ul><ul><ul><ul><li>Measure M – AHRP – Overlays Only </li></ul></ul></ul><ul><ul><ul><li>Assessment Districts </li></ul></ul></ul><ul><ul><ul><li>Federal Grants (CDBG) – Overlays Only </li></ul></ul></ul><ul><ul><ul><li>General Funds </li></ul></ul></ul>
  8. 8. Past Street Maintenance Funding in Rancho Santa Margarita <ul><li>(Actual Expenditures, Rounded to $1,000) </li></ul><ul><li>FY 2001/02 = $31,000 </li></ul><ul><li>FY 2002/03 = $395,000 </li></ul><ul><li>FY 2003/04 = $276,000 </li></ul><ul><li>FY 2004/05 = $440,000 </li></ul><ul><li>FY 2005/06 = $952,000 </li></ul><ul><li>FY 2006/07 = $2,935,000 </li></ul><ul><li>FY 2007/08 = $1,110,000 </li></ul>
  9. 9. Past Street Maintenance Projects in RSM Prior to Incorporation <ul><li>1994-95: Slurry Seal including residential and arterial </li></ul><ul><li>roads - $600,000 </li></ul><ul><li>1995-96: Number 2 Lane reconstruction on Santa </li></ul><ul><li>Margarita Parkway between Alicia and Melinda $180,000 </li></ul><ul><li>1998-99: Slurry Seal off of Alicia- $60,000 </li></ul><ul><li>2000-01: Asphalt Overlay of Residential Streets $260,000 </li></ul>
  10. 10. <ul><li>Combination of Gas Tax, Measure M Turnback, and Proposition 42 </li></ul><ul><li>7 years – Consistent with CIP </li></ul><ul><li>Problems: </li></ul><ul><ul><li>Measure M Turnback is a sales tax, which is now decreasing. </li></ul></ul><ul><ul><li>Gas Tax revenues may decrease with more fuel efficient cars. </li></ul></ul>Future Road Maintenance Revenues
  11. 11. <ul><li>A Tool to Answer Questions: </li></ul><ul><ul><li>What do I have? </li></ul></ul><ul><ul><li>What condition is it in? </li></ul></ul><ul><ul><li>What do I need to repair it? </li></ul></ul><ul><ul><li>How much money do I need? </li></ul></ul><ul><ul><li>When should I spend it? </li></ul></ul><ul><ul><li>What if? </li></ul></ul>What is a Pavement Management Program?
  12. 12. <ul><li>Advantages </li></ul><ul><ul><li>Less Expensive </li></ul></ul><ul><ul><li>Internal Oversight (More Control) </li></ul></ul><ul><li>Disadvantages </li></ul><ul><ul><li>More Staff </li></ul></ul><ul><ul><li>Need for Training </li></ul></ul><ul><ul><li>Difficult to Focus on this function unless only function </li></ul></ul><ul><ul><li>Less Qualified Expertise </li></ul></ul><ul><ul><li>Potential Quality Control Issues </li></ul></ul><ul><ul><li>May Need Capital Expenses </li></ul></ul>In House PMP ?
  13. 13. Pavement Management Program Steps to Implementation of a PMP: Step 1: Assessment of Existing Pavement Network Step 2: Work History Updates Step 3: Pavement Inspections Step 4: Data Input Step 5: QA/QC Step 6: Budgetary Analysis and Reporting Step 7: GIS and Mapping
  14. 14. 2008 Update of RSM PMP <ul><li>Assess previous City maintenance efforts and incorporate data into the City’s MicroPAVER database </li></ul><ul><li>Perform pavement condition surveys to generate a Pavement Condition Index (PCI) for each pavement section </li></ul><ul><li>Develop Capital Improvement Program budget and schedule based on maintenance zones, available funding, current conditions and maintenance practices </li></ul><ul><li>Submit Citywide CIP report to OCTA for Measure M compliancy </li></ul><ul><li>Link all MicroPAVER pavement data to the City’s GIS </li></ul>
  15. 15. MicroPAVER <ul><li>Currently being used by over 600 cities, counties and airports </li></ul><ul><li>This includes over 200 cities within California </li></ul><ul><ul><li>23 cities in LA County; 22 cities in Orange County </li></ul></ul><ul><li>MicroPAVER’s PCI methodology is the only pavement rating methodology recognized for rating road pavements </li></ul><ul><li>MicroPAVER allows for the collection of 19 AC and 19 PCC distress types </li></ul><ul><li>Three levels of severity can be collected for each distress type </li></ul><ul><li>Recently selected by OCTA for countywide use </li></ul>
  16. 16. Pavement Condition Index (PCI) <ul><li>The PCI is a condition rating that ranges from 0 to 100 </li></ul><ul><li>Weighted average PCI = pavement section PCI * by its area / by the total square footage of the specific network or pavement area. </li></ul>
  17. 17. PCI = 100 Action  Do Nothing PCI = 100 Action  Do Nothing
  18. 18. PCI = 70 Action  Surface Treatment (Slurry) PCI = 70 Action  Surface Treatment (Slurry)
  19. 19. PCI = 50 Action  Structural Improvement (Overlay) PCI = 50 Action  Overlay
  20. 20. PCI < 20 Action  Reconstruction PCI < 20 Action  Reconstruction
  21. 21. City PMP / Network <ul><li>The City of RSM PMP includes: </li></ul><ul><ul><li>- The Arterial/Collector road network consists of 8,187,808 SF of pavement totaling 38.1 miles. </li></ul></ul><ul><ul><li>- The Residential/Industrial network 10,625,201 SF of pavement totaling in 54.1 miles. </li></ul></ul><ul><ul><li>- 558 pavement segments within its jurisdiction (18,813,009 square feet of pavement). </li></ul></ul><ul><ul><li>- 92.2 centerline miles of streets within the network. </li></ul></ul><ul><li>The weighted average PCI for the City’s Arterial/Collector road network is 74.6 </li></ul><ul><li>The weighted average PCI for the City’s Residential network is 77.9 </li></ul><ul><li>The citywide weighted PCI is 76.5 </li></ul>
  22. 22. <ul><li>RSM is above average </li></ul><ul><li>Data from OCTA (2005) </li></ul><ul><li>Trying to Achieve Countywide Uniformity (common PMP software) </li></ul>PCI Comparison to Other Cities
  23. 23. Current Conditions
  24. 24. Individual quantities show total mileage Current Conditions
  25. 25. Maintenance Zones – PCI’s
  26. 26. <ul><li>It is more cost effective to maintain a pavement segment in good condition over its useful life in comparison to letting it deteriorate to the point that it requires a major overlay or reconstruction </li></ul>Pavement Life Cycle
  27. 27. <ul><li>Stop Gap (Crackfilling, Potholing) </li></ul><ul><li>Slurry Seal </li></ul><ul><li>Asphalt Concrete Overlay </li></ul><ul><li>Rubberized Asphalt Concrete Overlay </li></ul><ul><li>Complete Reconstruction </li></ul>Common Pavement Rehabilitation Strategies
  28. 28. Street Selection Criteria <ul><li>PMP Output based on PCI (A Planning Tool) </li></ul><ul><li>Available Funding </li></ul><ul><li>Conflicting City Capital Projects </li></ul><ul><li>Outside Conflicting Projects (i.e. Developments or Utilities) </li></ul><ul><li>New Information (changes) during construction </li></ul>
  29. 29. Maintenance Strategy Assignments $6.36/SF Reconstruction 0 - 20 $1.65/SF 1.6&quot; ARHM (Arterial) 21 - 55 $1.55/SF 2.0&quot; AC Overlay Mill & Cap (Residential) 21 - 65 Minimal Level of Service (70) $0.30/SF Slurry Seal 65 - 85 Varies by Activity Preventative, Stop Gap 80-100 Unit Cost Description PCI Range All Streets
  30. 30. Maintenance zone programs create a proactive management program that generates a greater return on the revenue’s City’s invest which in turn allows for deferred overlay & reconstruction projects to be funded without major delay. Each residential street is surveyed every three years Residential/Industrial Maintenance Zone Findings
  31. 31. Arterial PCI maintains at an average of 75 over the 7yr CIP This result is produced by spending an average of $618,000 per year Arterial Capital Improvement Program MAINTAIN CURRENT ARTERIAL WEIGHTED PCI
  32. 32. CIP – Maintain Current PCI Budget
  33. 33. Citywide residential PCI maintains at an average of 77 over the 7-yr CIP This result is produced by spending an average of $580,000 per year over the next seven years This budget model addresses every residential street within a maintenance zone each year Residential Capital Improvement Program MAINTAIN CURRENT RESIDENTIAL WEIGHTED PCI
  34. 34. CIP – Maintain Current PCI Budget
  35. 35. Comparison of All Budgets Maintain Citywide Average (76.5 PCI) Program = $1.2 Million / yr Maintain PCI of 70 Program = $900,000 / yr Constrained Program = $250,000 / yr 56.1 69.8 76.3 2014-15 59.4 71.1 76.6 2013-14 62.7 72 77.1 2012-13 66 73.4 76.8 2011-12 68.9 74.1 76.4 2010-11 71.7 74.8 76.1 2009-10 73.2 74.6 75.8 2008-09 76.5 76.5 76.5 Current Constrained Program Reach PCI of 70 Program Maintain Citywide Average Program Fiscal Year
  36. 36. Comparison of All Budgets Maintain Citywide Average (76.5 PCI) Program = $1.2 Million / yr Maintain PCI of 70 Program = $900,000 / yr Constrained Program = $250,000 / yr
  37. 37. <ul><li>Citywide PCI is 76.5 </li></ul><ul><li>The City’s maintenance zones, that were established in FY 2000, have created a high level of condition throughout the City. </li></ul><ul><li>Street maintenance funding needs to stay at a consistent level of $1.2 Million / yr over the next seven years to maintain the current citywide PCI level </li></ul><ul><li>A proactive overlay program should be implemented to address deferred pavement sections throughout all current zones </li></ul><ul><li>Continue to inspect the arterial/collector network every two years and the residential network every three years to build a stronger PMP </li></ul><ul><li>Consider adjusting the residential maintenance zones based on the pavement conditions, the identified funding levels in the near future and future Measure M2 funding </li></ul><ul><li>Aggressively pursue grant funding from OCTA (M2) and State. </li></ul>Findings and Recommendations
  38. 38. <ul><ul><li>Provides new wearing surface. </li></ul></ul><ul><ul><li>Extends pavement life. </li></ul></ul><ul><ul><li>Seals pavement. </li></ul></ul><ul><ul><li>Aesthetic Improvement. </li></ul></ul><ul><ul><li>Does not add structural integrity. </li></ul></ul><ul><ul><li>Opportunity to change or refresh striping. </li></ul></ul>What is the purpose of Slurry Seal?
  39. 39. Types of Slurry Seal Type I: Penetrates into finer cracks and seals better. Has lower skid resistance and should not be used on grades steeper than about 5%.Does not fill in more substantial cracking. Cleaner looking. Type II: Better skid resistance and therefore safer for traffic safety. Fills in larger defects. Some of the larger aggregate will ravel and collect in the gutters for a couple of months and will be tracked into cars and houses (aggressive sweeping needed at first). Should roll with a pneumatic tire roller at just the right time to lay down some of the sharp edges.
  40. 40. <ul><li>Fog Sealing </li></ul><ul><li>Chip Seals </li></ul><ul><li>Ultra Thin Whitetopping (UTW) </li></ul><ul><li>CIP Asphalt Recycling </li></ul>Other Pavement Rehabilitation Strategies

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