Effective Pavement Management: Understanding the Health and Needs of your Roads

Transcription

1 Effective Pavement Management: Understanding the Health and Needs of your Roads October, 2017

2 Agenda What s in your Road Portfolio? Investing Wisely in your Roads Create $avings from your Road Data

3 What s in Your Road Portfolio?

4 Good Rating Practices When to Do Your Ratings Spring or Fall Sunny Days After a Rainfall (Not During) Verify Your Mileage Certification Entries Consistent Rating Staff

5 Where to Spend Your Time New to Excellent Roads (9-10 PASER) Drive-By Will Pick Up Major Issues Good to Very Good Roads (6-8 PASER) More detailed inspection (1-2 min/segment) Fair Roads (4-5 PASER) Detailed Inspection (2-3 min/segment) Poor to Failed Roads (1-3 PASER) Drive-By is Sufficient

6 Pavement Cracking Transverse & Longitudinal Transverse Longitudinal

7 Surface Defects Raveling Small aggregate particles have worn away exposing tops of large aggregate. Erosion further exposes large aggregate.

8 Surface Defects Polishing & Flushing Polishing Worn aggregate needs repair Flushing Dark patches show where asphalt has worked to the surface

9 Surface Deformation Rutting Even slight rutting is evident after a rain. Severe rutting over 2 caused by poor mix design.

10 Pavement Cracking Block Cracks Large blocks, approximately 10 across. Intermediate-size block cracking, 1-5 across with open cracks Extensive block cracking in an irregular pattern

11 Pavement Cracking Alligator Cracks Alligator crack pattern. Tight cracks and one patch.

12 Potholes & Patching

13 Rating 10 EXCELLENT RATING 10 - New construction. No maintenance required.

14 Rating 9 EXCELLENT RATING 9 - Recent overlay, Consider Crack Sealing.

15 Rating 8 VERY GOOD RATING 8 - All cracks are tight or sealed. Maintain crack sealing program.

16 Rating 7 GOOD RATING 7 - Tight and sealed transverse and longitudinal cracks. Maintain crack sealing program and consider preservative treatment.

17 Rating 6 GOOD RATING 6 - Slight surface raveling with tight cracks, less than 10 apart. Maintain crack sealing program and consider preservative treatment.

18 Rating 5 FAIR RATING 5 - Moderate to severe raveling in wheel paths. Preservative maintenance treatment or structural improvement required.

19 Rating 4 FAIR RATING RATING 4 - Extensive block cracking, blocks tight and sound. Preservative maintenance treatment or structural improvement required.

20 Rating 3 POOR RATING 3 - Many wide and raveled cracks indicate need for milling and overlay. Structural Improvement Required.

21 Rating 2 VERY POOR RATING 2 - Extensive alligator cracking. Pulverize and rebuild.

22 Rating 1 FAILED RATING 1 - Potholes from frost damage. Reconstruction required.

23 Road Rating Videos

24 Road Rating Videos

25 Road Rating Videos

26 Road Rating Videos

27 Your Average Rating Target Community Average Rating: Single average rating for all of your roadways Breakdown of individual ratings is more complex Roadway Condition Frequency Report Roadway Condition Frequency Report 50% 45% 40% 35% 30% 25% 20% 15% 10% 5% 0% 6.0 Ave Rating 1 to 2 3 to 4 5 to 6 7 to 8 9 to 10 50% 45% 40% 35% 30% 25% 20% 15% 10% 5% 0% 6.0 Ave Rating 1 to 2 3 to 4 5 to 6 7 to 8 9 to 10 % of Roadways % of Roadways

28 Know Your Roads Truck Routes & Industrial Parks Weight Limits Heavy Traffic Arterials Shopping Centers/Big Box Stores Soil Conditions and Drainage Patterns Frequently flooded or wet roadways Low lying river areas, Former wetlands

29 Know Your Roads Super Pave Mix Designs Brittle Raveling Last 10 Years 2017 Mix Designs Pavement Cores & Soil Borings

30 Value of your Road Network Urban Asphalt Roads (Curb/Gutter, Storm Sewer) ~1.5M/Mile Rural Asphalt Roads (Ditches, Culverts) ~$750K/Mile Your Road Network is your Most Valuable Asset! $15 Million for 20 Miles of Rural Roadway $30 Million for 20 Miles of Urban Roadway

31 Costs of Bad Roads Drivers avoid bad roads Bad roads cost your Residents Money 5 Rating: 10% more vehicle maint/repair costs* 3 Rating: 70% more vehicle maint/repair costs* *NCHRP Report 720 (2012)

32 Investing Wisely in Your Roads

33 Asphalt Pavement Life No Maintenance Year Life with Proper Maintenance 30+ Years

34 Review: Condition of Streets Pavement Life Cycle Excellent Good Fair Poor Very Poor 40% drop in quality 75% of life 40% drop in quality Each $1 of renovation cost here 12% of life Will cost $6-$10 if delayed to here Maintenance/Reconstruction Cost $$$ Failed Time

35 How Pavements Fail Drainage Poor Drainage Tree Canopy Loading Crack Creation Base Failure 1-4 Rating Soils, Subbase Fatigue

36 Cost-Effective Maintenance Techniques Crack Sealing & Crack Filling Surface Sealing Curb & Gutter Replacement Drainage Improvements Maintenance Overlays

37 Sealant Placement Proper Placement Wasted Effort (-$$)

38 Pavement Sealing Improves Surface Texture Waterproofs Surface Protects Against Oxidation Seals Small Cracks Chip Seal Slurry Seal

39 What Does Preventative Maintenance Cost? Crack Sealing or Crack Filling $0.75 to $1.35/L.F. Chip/Slurry Seal $2.15 to $2.75/S.Y. Base Patching $18.50 to $20.00/S.Y. Curb & Gutter replacement $22.00 to $26.00/L.F. Budget Separately for Maintenance

40 What Does Preventative Maintenance Cost? 2 Asphalt Overlay ~$125,000/Mile 2 Mill and Overlay ~$150,00/Mile Pulverize and 4 Overlay ~300,000/mile Complete Reconstruct Rural ~$675,000/mile Complete Reconstruct Urban ~$1,500,000/mile plus Sewer & Water

41 Crack Sealing One Mile of Road Year Length Cost Year L.F./Year $ Year 3 1,000 L.F./Year $1, Year 5-Year L.F./Year $3, Cost for 2-Inch Mill & Overlay Total $5, $131,000 Net Savings $121,210 Crack Sealing is most effective on NEWER roads!

42 Create $avings From Your Road Data

43 Road Program Funding How do you fund your roads? Capital Borrowing Street Funds Storm Water Utility State/Federal Funding Assessments

44 Spending SAVES You Money 20 Miles of Roadway - $20 Million Asset No Maintenance: ~15-20 Year Pavement $1 Million Annual Replacement (5% of Roads) With Proper Maintenance: ~20-30 Years $670,000 Annual Replacement (3.5% of Roads)

45 Justifying your Road Program Value of your Roads $1 Million upkeep for a $30 Million asset Know the costs of deferring $1 Million deferred now = $2 Million in 5 Years Savings will take time

46 WISLR Pavement Analysis Condition Report 5-Year Budget Plan Rudimentary Needs Analysis

47 GIS Pavement Analysis Better Decision Making Process Better CIP Development, Department Collaboration Better Record Keeping Better Communication with Officials, Residents

48 Village of Hartland Pavement Management Study & Forecast of Long-Term Road Needs

49 Pavement Management History Pulverize Roads on 20-Year Cycle $12,000 Annual Crack Sealing Budget Pulverize Roads on 24-Year Cycle $25,000 Annual Crack Seal Budget

50 Deterioration Model Source Data - WISLR Hartland s WISLR Data Populated Model WISLR Data was Reviewed for Irregularities Irregularities Reviewed with Staff & Revised Onsite Review of Village Roads

51 Deterioration Model Deterioration Curve Results 5 Rating at 23 Years 6 Rating at 17.5 Years Includes 2 Crack Seals 3 rd, 10 th Years

52 Forecasting Model Assumptions Average Road Life is 20 Years (5 Rating) Crack Seal Twice - Add 5 Years to Life Considerations Model is Most Accurate as a Broad Overview The More Roads, the More Accurate the Model Individual Anomalies Accounted for in Large Model Costs & Road Lives are Approximate

53 Results Annual Cost Annual Cost $6,000,000 $5,000,000 $4,000,000 $3,000,000 $2,000,000 $1,000,000 $0 $6,000,000 $5,000,000 $4,000,000 $3,000,000 $2,000,000 $1,000,000 $0 Hartland 3 yr, 10 yr Crack Seal Hartland 2 year cycle Crack Seal Crack Sealing Pulverize & Overlay Total Cost Total Costs (averaged) Crack Sealing Pulverize & Overlay Total Cost Total Costs (averaged)

54 Results HARTLAND PRIOR PAVEMENT MANAGEMENT PROGRAM Minimum Rating Crack Seal Program Annual Cost Total Cost (over 24 years) Average Annual Rating Average Road Life 5.5 3, 10 yr $847,300 $19,800, yr PAVEMENT DETERIORATION MODEL RESULTS Minimum Rating Crack Seal Program Annual Cost Total Cost (over 24 years) Average Annual Rating Average Road Life 5.0 3, 10 yr $839,411 $20,145, yr year cycle $692,206 $16,612, yr

55 Pavement Management Recommendations Recommend Adoption of 2-Year Crack Sealing Program Higher Initial Cost for About 5 Years (~$50,000 Year) Pavement Management Model Update Bi-Annual Update to Evolving 6-Year CIP $816,000 in 2016 ($684,000) $982,000 in 2017 ($809,000)

56 Pavement Management Recommendations CIP Planning

57 QUESTIONS