1 / 30

LA COUNTY PAVEMENT MANAGEMENT SYSTEM (Stantec RoadMatrix)

LA COUNTY PAVEMENT MANAGEMENT SYSTEM (Stantec RoadMatrix). 2013 Sustainable Pavement Preservation Workshop Presented by Van V. Truong, P.E . LADPW Headquarter – November 13, 2013. Presentation Overview. What Condition is Our Roads How We Treat Our Roads How We Prioritize Our Projects.

gizi
Download Presentation

LA COUNTY PAVEMENT MANAGEMENT SYSTEM (Stantec RoadMatrix)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LA COUNTYPAVEMENT MANAGEMENT SYSTEM (Stantec RoadMatrix) 2013 Sustainable Pavement Preservation Workshop Presented by Van V. Truong, P.E. LADPW Headquarter – November 13, 2013

  2. Presentation Overview • What Condition is Our Roads • How We Treat Our Roads • How We Prioritize Our Projects

  3. Pavement Condition Assessment for LA County Roads Highways (Majorsand Secondary) 3,100 lane miles Locals (Local Streets) 4,200 lane miles TOTAL: 7,300 lane miles (546 million square feet)

  4. Condition Assessment Approach • Separated functional class – Locals and Majors • Field visited each Road Maintenance District • Grouped roads by neighborhood setting • Summarized their characteristics • Document the current pavement condition

  5. Major and Secondary Roads Local Roads

  6. Location and Environment • Coastal, inland valley, or mountain • Urban or rural • Zoning • Traffic type • Pavement History • Past treatments • Surface condition • Geometrics • Parkway Condition • Curb and gutter • Sidewalk • Drainage • Tree roots • Shoulder

  7. PAVEMENT DISTRESS SURVEY MANUAL Pavement Management Unit Geotechnical & Materials Engineering Division

  8. Cracks forming a network of multi-sided (polygon) blocks usually less than 1' on longest side. Alligator Cracks Slight : Cracks < ¼” wide. Moderate: Cracks ¼” to ½” wide. Severe Severe: Cracks > ½ “ wide. Extent: % Area

  9. Section Information Pavement Sketch • 13 Types of AC • Pavement Distresses • Cracking (Load/Non-load) • Deformation • Surface defects Photos Information Extent Criteria (% Area) Cracking Severity (Slight/Moderate/Severe)

  10. Slight Alligator Cracking = 30% Saybrook Ave – Northside Drive to Whittier Boulevard Section Overview

  11. FALLING WEIGHT DEFLECTOMETER (FWD) For Majors Only

  12. Pavement Management System RoadMatrix Determine Pavement Condition Index (PCI) Application Version 3.3 4th generation PMS Oracle database platform

  13. Pavement Performance Prediction Curves Thick Pavement Low Traffic Strong Subgrade 100 80 60 Pavement Condition Index (PCI) 40 20 Thin Pavement High Traffic Weak Subgrade

  14. General Pavement Condition Category

  15. EXCELLENT (PCI = 100 - 86) GOOD (PCI = 85 - 75) FAIR (PCI = 74 - 58) POOR (PCI = 57 - 40) FAILED (PCI = 39 - 0)

  16. Pavement Condition Index (PCI) GIS Map

  17. 2012 LA County Roads NetworkPCI

  18. Presentation Overview • What Condition is Our Roads • How We Treat Our Roads • How We Prioritize Our Projects

  19. Typical Pavement Performance Curve Pavement Preservation Resurface Major Rehabilitation Reconstruction

  20. Treatment Selection • Treatment Categories • Preservation (Fog seal, slurry seal, cape seal) • Resurface (AC mill and fill) • Rehabilitation (AC remove and replace) • Reconstruction (Full-depth removal) • Decision Trees • Guide user to the optimal treatment selection

  21. Decision Tree Analysis What are the possible treatment alternatives?

  22. LA County’s 3-Pronged Sustainable Treatment Approach 1. Take care of our good roads first 2. Use recycled materials in pavement treatments 3. Reutilize existing materials in-place

  23. Presentation Overview • What Condition is Our Roads • How We Treat Our Roads • How We Prioritize Our Projects

  24. Key Factors of Prioritization • Volume of Traffic • Benefit/Cost Ratio

  25. Benefit Cost Ratio Determination This area represents benefits gained from the treatment selected 100 90 80 70 60 50 40 30 20 10 0 2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050

  26. PMS Factors of Prioritization • Volume of Traffic • Benefit/Cost Ratio • Treating roads prior to falling into next treatment category

  27. Typical Pavement Performance Curve Preservation ($0.20-$1.25/sf) Resurface ($1.75-$2.50/sf) Major Rehabilitation ($3-$5/sf) Reconstruction ($6-$12/sf)

  28. PMS Factors of Prioritization • Volume of Traffic • Benefit/Cost Ratio • Treating roads prior to falling to next treatment category • Funding Availability • The forecasting capabilities of PMS enable us to develop 5 Years Plans and determine future pavement conditions.

  29. Our Pavement Management System (PMS) • Conditions, treatment and prioritization of our roads • “Versatile” - can implement new approaches such as our 3-pronged sustainable pavement approach • Provides good information to help us make good decisions

  30. Thank you!

More Related