Good Roads Cost LessAn Asset Management Approach for State, County and Local Government

1
Good Roads Cost Less-An Asset Management Approach
for State, County and Local Government

• By
• Doyt Bolling, P.E.
• Director of the Utah Technology Transfer Center

2
Pavement Condition Present Serviceability
Index (PSI)
Effect of Pavement Condition on Fuel Consumption
Percent Fuel Increase
20
40
0
60
80
5
20
Very Good
Pavement Condition Remaining Service Life
(RSL)
13
4
Good
3
7
Fair
0
2
Poor
1
Very Poor
0
50
10
40
20
30
Desired Vehicle Operating Speed (MPH)
3
Pavement Condition vs. Fuel Consumption
Present Serviceability Index (PSI)
Remaining Service Life (RSL)
5
20
Very Good
4
14
Urban
Good
3
7
Fair
2
0
Poor
1
Very Poor
8
9
10
11
12
13
14
15
Fuel Consumption - Miles Per Gallon
4
SURFACING THICKNESS VS LOAD APPLICATIONS
BITUMINOUS SURFACING EQUIVALENT THICKNESS -
INCHES
10
8
6
8½
7½
4
2
0
2,000,000
4,000,000
1,000,000
3,000,000
PAVEMENT LIFE IN NUMBER OF ACCUMULATED
18,000 POUND AXLE APPLICATIONS
5
ADDITIONAL SURFACING PLACED BEFORE FAILURE
BITUMINOUS SURFACING EQUIVALENT THICKNESS -
INCHES
10
2
8
6
4
2
0
4,000,000
3,000,000
1,000,000
2,000,000
PAVEMENT LIFE IN NUMBER OF ACCUMULATED
18,000 POUND AXLE APPLICATIONS
6
ADDITIONAL SURFACING PLACED AFTER FAILURE
BITUMINOUS SURFACING EQUIVALENT THICKNESS -
INCHES
10
5 3/4
8
6
4
2
0
2,000,000
1,000,000
4,000,000
3,000,000
PAVEMENT LIFE IN NUMBER OF ACCUMULATED
18,000 POUND AXLE APPLICATIONS
7
Comparison Strategies
180,000.00
161,000.00
160,000.00
Cost Per Mile of
Pavement 40' Wide
140,000.00
120,000.00
100,000.00
5-3/4"
80,000.00
56,000.00
60,000.00
40,000.00
2"
20,000.00
0.00
Before Failure
After Failure
8
Surfacing Thickness Required for 1,000,000
Additional Load Applications
9
Asset Management Process
10
Inventory

• Management Segments
• Physical Dimensions
• Roughness

• Functional Classification
• Cross Section Drainage
• Asset Value

11
Condition Survey
12
Condition Assessment

• Pavement Distress
• SHRP Distress Manual
• Severity Extent
• Remaining Service Life

13
Governing Distress

• The Pavement Distress that produces the lowest
  Remaining Service Life or the Pavement Distress
  most likely to cause failure

14
Governing Distress Types
15
RSL of 0
16
RSL of 4
17
RSL of 8
18
RSL of 18
19
Governing Distress Types
20
RSL of 0
21
RSL of 8
22
RSL of 14
23
Governing Distress Types
24
RSL of 0
25
RSL of 8
26
RSL of 12
27
RSL of 12
28
RSL of 14
29
Pavement Performance Curve
Lowest Annual Resurfacing Cost (Rehabilitation
Treatments)
Preventative Treatments
Terminal Serviceability
30
Network Performance Objectives(Recommendations)
State Network
Percent Requiring Reconstruction
Average RSL
Interstate
15 Years
3 or less
12 Years
5 or less
Arterials/Major Collectors (NHS and High Volume
Roads)
Major Collectors (Low Volume) and Minor
Collectors
10 Years
5 or less
No more than 5
10 Year(min.)
Local Roads and Streets
31
Remaining Service Life (RSL) Distribution
(Asset Evaluation)

• State Highway Network
• Tooele Countys Roads
• Heber Citys Street Network

32
Remaining Service Life Distribution State
RSL average 8.32
33
Remaining Service Life Distribution County
Average RSL 6.9
34
Remaining Service Life Distribution City
Average RSL 7.9
35
Needs Assessment
Note Total Funding needs to meet recommended
performance objectives. Costs reflect
only pavement work items. P.E. CE.
mobilization or inflation costs are not included.
36
Needs AssessmentCounty and City Networks
37
Pavement Maintenance Preservation Strategies

• Routine (reactive) Maintenance
• Preventative Maintenance
• Rehabilitation
• Minor
• Major
• Reconstruction

38
Routine (reactive) Maintenance
39
Preventative Maintenance
40
Rehabilitation
41
Reconstruction
42
UDOTs Strategies Programs for Providing Good
Serviceable Pavements
Overall Pavement Health
Capacity Safety Needs
Pavement Preservation
New Roads (new alignment)
Blue Book
Code 1
Widening (no change to alignment or profile)
Pavement Reconstruction
Blue Book
Reactive Maintenance
Purpose Respond to immediate concerns about
safety and rideability Keep On Going
Purpose Start over from scratch I Give Up
Pavement Rehabilitation
Orange Book Code 1
Pavement Preventive Maintenance
Improves the system
Purpose Slow the natural deterioration
process Stay Well
Blue Book
Purple Book
Minor Rehabs
Major Rehabs
Purpose Extend pavement life (delay the need for
major rehab or reconstruction)
Purpose Fix a pavement that has reached an
unacceptable condition
No deliberate improvement to the system
Get Well
43
Treatment Life Cycle LVASP
Terminal Serviceability
44
Treatment Life Cycle LVASP
Terminal Serviceability
45
Summary of Recommended Pavement Funding Levels
per Year for the State Highway Network
46
Preservation Strategies and Estimated Costs (Per
Year)
47
Optimized Budget and Predicted Remaining Service
Life (RSL) Distribution in Ten years

• State Highway Network
• Tooele Countys Roads
• Heber Citys Street Network

48
Remaining Service Life Distribution State
49
Remaining Service Life Distribution-Tooele County
50
Remaining Service Life Distribution-Heber City
51
Predicted 10 Year RSL Average- Heber City
52
Summary

• Good Roads Cost Less for Road User
• Fuel Savings
• Vehicle Repairs
• Time
• Good Roads Cost Less
• To Maintain
• To Preserve
• To Rehabilitate
• Good Roads Impact Environment Less
• Less air pollution

• Good Roads are Safer
• Skid resistance
• Edge drop-off
• Good Roads Provide Better Service
• Accommodate heavier loads
• Smother Ride
• Greater Capacity