Michigan Transportation Asset Management Training...Michigan’s Local Technical Michigan Transportation Asset Management Council Assistance Program Cost Effectiveness of Treatments

Michigan Transportation Asset Management Training

Assess Current Condition

Michigan’s Local Technical Assistance Program

Michigan Transportation Asset Management Council Michigan’s Local Technical Assistance Program

Report Results

Inventory (Assess Conditions)

Rating (Assess Conditions)

Predict Future Conditions

Set Goals / Network Level Metrics

Policy for Selecting Projects

List of Potential Projects That Meet Criteria / Costs/ Benefits

Asset Management Process Components


You can’t manage what you don’t know you own

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1. Inventory – What do I own?


Need data on any feature that influences:

• Cost to Replace or Maintain

• Maintenance or Rehab Treatment Options

• Influences Management Decisions

• Service Life

Inventory – What do I own?


Inventory – Road Example

• Maintenance history

• Type of roads

• Asphalt

• Concrete

• Sealcoat

• When constructed?


• How many lane miles of each?

• What types of roads are they – functional class

• Where are they - Map


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Inventory – Others


• Funding qualification

• Curb types

• Shoulder type and width

• Presence of other utilities and general condition

• Confining structures (overpass)


Need data on any feature that influences:

• Cost to Replace or Maintain

• Maintenance or Rehab Treatment Options

• Influences Management Decisions

• Service Life

Inventory – What do I own?


Report Results

Inventory (Assess Conditions)

Rating (Assess Conditions)

Predict Future Conditions

Set Goals / Network Level Metrics

Policy for Selecting Projects

List of Potential Projects That Meet Criteria / Costs/ Benefits

Asset Management Process Components


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2. Condition– What Shape is it In?


Why Rate Roads?


What Work To Do, When & Where?


Measure Effectiveness

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Cost Effectiveness of Treatments

Fix Type

Cost $ per Lane Mile

Added Life

Cost per Year of Added Life

Crack Seal $4,000 1 yr. $4,000

Seal Coat &

Crack Seal

$20,000 5-9 yr. $4,000

Overlay $100,000 8-12 yr. $12,500

Crush & Shape $150,000 14 yr. $10,700

Reconstruction $300,000 15 yr. $20,000


Prediction – How will the asset change?


Network Level Metric

Road Rating Distribution 2004

0

5

10

15

20

25

30

35

40

45

1 2 3 4 5 6 7 8 9 10

PASER Rating

Lan

e M

iles


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Condition Rating – What shape is it in?

Ordered State Ratings

Set of criteria which describe a set of discrete, ordered states.

Professional observer judges state and assigns rating.

Usually most cost effective system

Most subject to variability by rater

• PASER – Pavement Surface Evaluation and Rating

• Maintenance State ―Good – Fair – Poor‖

• MDOT Sufficiency Rating System


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Ordered State Rating Block Cracking

Moderate Progression

Rutting Less Than ½ Inch

Transverse Cracks 20 Spacing

Longitudinal Joint Cracks Present

PASER 5


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Condition Rating – Types of Systems

Index System

Set of criteria which relates physical measurements of distress extent and observer opinion of severity to a numeric rating.

Criteria numerically relate distresses to each other.

Usually requires sampling and reliance on statistics to apply over large network

Index levels may not be discrete

Record of distress propagation

• PCI – Pavement Condition Index (Micropaver)

• MDOT Distress Index


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Index Rating 270 sqft Moderate Block

Cracking 20 pts

120 sqft minor Rutting 10 pts

578 LF of Severe Transverse Cracks 10 pts

120 LF Med Severity Joint Distress 5 pts

PCI 45


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Condition Rating – Types of Systems

Measurements of physical aspects

• Rutting

• Roughness

• Skid resistance

• FWD data (pavement rigidity)

• Crack frequency


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How Do You Pick A Rating System?

• Things to consider

• Sustainable

• Cost to collect

• Use your own staff

• Explainable

• Your boss

• Public

• Other’s in your organization

• Elected officials

• Be descriptive about the asset

• Aid in decision making


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TAMC Pavement Condition Survey

• PASER – Pavement Surface Evaluation and Rating

• Visual survey—based on sound engineering principles

• Measure of surface distress

• Reported on a scale of 1-10

• Council combines into three categories

• Routine maintenance (8 - 10)

• Capital preventive maintenance (5 - 7)

• Structural improvement (1 - 4)


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PASER Ratings Routine Maintenance—PASER 8, 9, 10


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PASER Ratings Capital Preventive Maintenance—PASER 5, 6, 7


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PASER Ratings Capital Preventive Maintenance—PASER 5, 6, 7


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PASER Ratings Structural Improvement—PASER 1, 2, 3, 4


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PASER Ratings Structural Improvement—PASER 1, 2, 3, 4


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Ask Questions, Get Answers

An intellectual is a man

who takes more words

than necessary to tell

more than he knows.

Dwight D. Eisenhower

Documents

Michigan Transportation Asset Management Training...Michigan’s Local Technical Michigan Transportation Asset Management Council Assistance Program Cost Effectiveness of Treatments