Pavement Investment Guide. CPAM March 15, 2018

Transcription

1 Pavement Investment Guide CPAM March 15, 2018

2 MnDOT s Pavement System 14,302 total roadway miles. Current value of about $4 Billion. MnDOT spends around $ 300M a year to keep it in a serviceable condition. We have a large number of rehabilitation techniques that we can use to repair the roadway. 4/16/2018 Optional Tagline Goes Here mndot.gov/ 2

3 Investment Questions What percentage of the pie should go to pavements? What should the mix of fixes look like? 20 plus options Hot-mixed Asphalt Portland Cement Concrete CIR, FDR, SFDR Preventive maintenance How should our strategy vary with budget? What will success look like? 4/16/2018 Optional Tagline Goes Here mndot.gov/ 3

4 Your personnel investment policy statement should: specify your investment goals and objectives, describe the strategies that will help you meet your objectives, describe your return expectations and time horizon, include detailed information about how much risk you re willing to take, include guidelines on the types of investments that make up your portfolio, specify how your portfolio will be monitored, and when or why it should be rebalanced. 4/16/2018 Optional Tagline Goes Here mndot.gov/ 4

5 MnDOT Philosophy Meet our performance targets for %Poor and %Good We need to optimize our investment at the system level. The mix-of-fixes strategy offers us the best opportunity for improvement. 4/16/2018 Optional Tagline Goes Here mndot.gov/ 5

6 Philosophy District staff have the ability to make the best decisions on pavement investments. We need to give District decision makers new tools to optimize the performance of their pavement system. Encourage innovation and risk! Use the latest new ideas to improve performance. 4/16/2018 Optional Tagline Goes Here mndot.gov/ 6

7 Philosophy Performance measures will help us examine, The current state of the system Long-term performance Risk The mix of fixes The proper use of preventative maintenance The optimum pavement budget 4/16/2018 Optional Tagline Goes Here mndot.gov/ 7

8 Required Performance Measures Target Measures % Poor %Good System Health Indicator Measures Remaining Service Life Asset sustainability ratio Asset Value Pavement preservation 4/16/2018 Optional Tagline Goes Here mndot.gov/ 8

9 Ride Quality Index The RQI is MnDOT s ride, or smoothness, index. It uses a zero to five rating scale, rounded to the nearest tenth. The higher the RQI, the smoother the road is. The RQI is intended to represent the rating that a typical road user would give to the pavement s smoothness as felt while driving the vehicle. Most new construction projects have an initial RQI above 4.0. Pavements are normally designed for a terminal RQI value of /16/2018 Optional Tagline Goes Here mndot.gov/ 9

10 % Poor and % Good 4/16/2018 Optional Tagline Goes Here mndot.gov/ 10

11 Remaining Service Life The RSL is an estimate, in years, until the Ride Quality Index, RQI will reach a value of 2.5. Most pavements will need some type of major rehabilitation when the RQI has reached this value. 4/16/2018 Optional Tagline Goes Here mndot.gov/ 11

12 Asset sustainability ratio (based on the STIP) Year Mile-Years Gained Mile-Years Lost Ratio (Gained/Lost) ,854 13, ,478 13, ,703 13, ,405 13, Ratios > 1.0 means we are adding more life than we are losing. Ratios < 1.0 means we are losing more life than we are adding. A mile long project with a 10-year fix adds 10 mile-years A mile of road with no fix loses 1 mile-year

13 ASSET VALUE EQUATE INPLACE PAVEMENT ASSET VALUE TO THE COST OF A PAVEMENT FIX THAT ADDS THAT AMOUNT OF RSL. RSL YEARS CATEGORY DOLLAR VALUE ($K) IN OTHER WORDS, A $300K/MILE FIX ADDS ROUGHLY YEARS OF RSL. WIDER REVIEW OF THESE FACTORS IS RECOMMENED

14 ASSET VALUE SUMMARY YEAR CALCULATED PAVEMENT ASSET VALUE 2014 MEASURED $3,753, MEASURED $3,832, PREDICTED $3,298, PREDICTED $2,790,900 Using this approach, the calculated pavement asset value in 2000 was over $5.2 billion.

15 Preventive Maintenance The percentage of PM treatments applied during a year vs. roadway miles that could benefit from a treatment The percentage of HMA overlays that have had a PM treatment in their lifetime 4/16/2018 Optional Tagline Goes Here mndot.gov/ 15

16 How? Create a software that can run a variety of investment scenarios 4/16/2018 Optional Tagline Goes Here mndot.gov/ 16

17 Menu All fix types Crack Sealing to Reconstruction Inputs Cost Life Timing When? 4/16/2018 Optional Tagline Goes Here mndot.gov/ 17

18 Software Users can select/view segments from a table or map and see predicted conditions. A segment can be clicked and then a project added. The outcome plot can also be viewed. 18

19 Sample Output Scenario % Poor % Good RSL years Asset sustainability ratio Asset Value $M PM One Two Three Four /16/2018 Optional Tagline Goes Here mndot.gov/ 19

20 Sharing Results Specify your investment goals and objectives, Describe the strategies that will help you meet your objectives, Describe your return expectations and time horizon, Include detailed information about how much risk you re willing to take, 4/16/2018 Optional Tagline Goes Here mndot.gov/ 20

21 Expectations Districts will report on their investment strategy at statewide meetings including % poor and good Mix of fix strategy Long-term performance How Districts used the System Health Indicator Measures RSL, asset value, Asset sustainability ratio and Preventive Maintenance 4/16/2018 Optional Tagline Goes Here mndot.gov/ 21

22 Schedule Report to legislators on status February 2018 Regular updates with MEO Complete software December 2018 Start using in next years CHIP Report out results Spring /16/2018 Optional Tagline Goes Here mndot.gov/ 22

23 NRRA NRRA Pavement Workshop May /16/2018 Optional Tagline Goes Here mndot.gov/ 23

24 Thanks! Corvette ZR1 755 HP Top speed 212 4/16/2018 Optional Tagline Goes Here mndot.gov/ 24