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Pavement Preservation Design April 20, 2009 2009 Roadway Conference.

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Presentation on theme: "Pavement Preservation Design April 20, 2009 2009 Roadway Conference."— Presentation transcript:

1 Pavement Preservation Design April 20, Roadway Conference

2 Pavement Services Unit Pavement Services Manager Pavement Design Pavement Management Pavement Quality Pavement Materials

3 Preservation Program  Add useful life to the road without increasing capacity.  May include reconstruction to re- establish an existing roadway.  Includes inlays, overlays, or other rehabilitation type alternatives.

4 Before…

5 After!

6 Pavement Design Inputs Maintenance History Construction History Traffic Distress Survey Subgrade Strength Pavement/Base: Conditions/Depths Field Work Construction Limitations

7 Field Crew in Operation

8 Subgrade Strength: Falling Weight Deflectometer

9 NDT Load “Strong” Pavement “Weak” Pavement Strong vs. Weak Pavements

10 Base: Conditions/Depths

11 Pavement: Conditions/Depths

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14 MP 1.22 PD #15 MP PD #16 MP PD #17 MP PD #18 MP PD #19 MP 1.46 PD #20 MP PD #21 Good ACFair ACPoor ACOil Mat Stripping Bridge #3584Bridge #3585Bridge #3586

15 Construction Limitations

16

17 Pavement Preservation Design Tools  ODOT Overlay  AASHTO 1993  AASHTO MEPDG

18 Engineering Analysis and Judgment

19 When to Contact Pavement Services  Early in the Design Process  Anytime the scope changes (even if it doesn’t seem like it will impact the pavement – we don’t mind phone calls or s)  Schedule changes

20 Questions?


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