TAM ETG Webinar #3Network Life Cycle Analysis Part 1: Introduction and Overview

Wednesday, July 8, 2015

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MnDOT TAMPLife Cycle Costing for Pavements

Presentation FrameworkBrief Overview

(development process, components, assets analyzed)

MnDOT’s TAMP Pavement Life Cycle Costs Purpose Process Inputs and Assumptions Strategies and Results

MnDOT’s Post-TAMP Pavement Asset Management Initiative

Collect Better Data on Pavement Maintenance Activities – Labor, Equipment, Materials

Transportation Asset Management Plan (TAMP)

FHWA pilot project

Moving Ahead for Progress in the 21st Century (MAP-21)

Development Process

Asset Inventory & Conditions Risk Analysis Life Cycle Cost Analysis Performance Measures &

Targets Performance Gap

Assessment Financial Plan & Investment

Strategies Implementation & Next Steps

TAMP Components

TAMP1 (July 2014) Pavements Bridges Deep Stormwater Tunnels High-Mast Light Tower

Structures Highway Culverts Overhead Sign Structures

TAMP2 (December 2015) Facilities Intelligent Transportation

System Infrastructure Lighting Noise Walls Traffic Signals Pedestrian Infrastructure

Assets Analyzed

MnDOT’s TAMP Pavement Life Cycle Costs

TAMP Life Cycle Cost Purpose

Identify Better Management Strategies

Quantify Future Maintenance

Determine Appropriate Treatments

Life-Cycle Costs Iceberg Initial Capital

Expenditures

Maintenance Costs

Future Capital Costs

Operationalcosts are not part of LCC, but are part of

overall management $

Background image: http://www.pvisoftware.com/blog/wp-content/uploads/2013/11/Pegasus_vertex_Iceberg.png

TAMP Life Cycle Cost Process

Established Pavement Technical Work Group Materials (i.e. pavement

office) & District maintenance staff

Subject matter experts provided guidance on typical inputs and assumptions

TAMP Life Cycle CostInputs and Assumptions

Analysis Period: 70 years Discount Rate: 2.2% Salvage Value Included Costs Collected/Analyzed by $/Lane-Mile

Rigid pavements: 11%, Flexible pavements:89%

Only Agency Costs Considered Annual Inspection Cost

$37 per roadway-mile

TAMP Life Cycle CostInputs and Assumptions

Routine & Reactive Maintenance MnDOT Metro spent $1.4 Million in 2012 Maintenance investment by condition

(G/F/P) could not be determined Maintenance performed 482 ln-mi of

pavements: 295 in Good, 161 in Fair and 26 in Poor

Weighting factors applied to maintenance costs: Good-0.8, Fair-1.2, Poor-1.8 Equates to Good-$2340/ln-mi, Fair-$3480/ln-

mi, Poor-$5229/ln-mi

Life Cycle CostsStrategies & Results

Typical, Desired, Worst First Strategies Identify minor and major rehab surface treatments for asphalt

and concrete

Deterioration Models for Various LCCA Scenarios

Mill & Overlay Strategy (Flexible Pavements)

Typical Pavement Age (yrs)

Pavement Age Range

(yrs)Treatment

Typical Condition When Applied

Typical Cost ($/ln-mi) Cost Range ($/ln-mi)

0 0 Initial Construction - $657,500 $210,000 - $2,000,000

8 6-10 Crack Treatment Good $6,000 $3,000 - $10,000

12 10-14 Surface Treatment Good $15,000 $10,000 - $30,000

20 18-22 Mill & Overlay (1st Overlay) Fair $155,000 $145,000 - $175,00024 21-25 Crack Treatment Good $6,000 $3,000 - $10,000

26 25-29 Surface Treatment Fair $15,000 $10,000 - $30,000

35 33-35 Mill & Overlay (2nd Overlay) Fair $155,000 $145,000 - $175,000

39 36-40 Crack Treatment Good $6,000 $3,000 - $10,000

41 39-43 Surface Treatment Fair $15,000 $10,000 - $30,000

47 45-49 Mill & Overlay (3rd Overlay) Poor $155,000 $145,000 - $175,00051 49-53 Crack Treatment Good $6,000 $3,000 - $10,00053 51-55 Surface Treatment Fair $15,000 $10,000 - $30,00057 55-59 Mill & Overlay (4th Overlay) Poor $155,000 $145,000 - $175,00061 59-63 Crack Treatment Good $6,000 $3,000 - $10,00063 61-65 Surface Treatment Fair $15,000 $10,000 - $30,00065 63-67 Mill & Overlay (5th Overlay) Poor $155,000 $145,000 - $175,00068 66-70 Crack Treatment Good $6,000 $3,000 - $10,00070 68-72 Reconstruction Fair $657,500 $210,000 - $2,000,000

Typical Pavement Age (yrs)

Pavement Age Range

(yrs)Treatment

Typical Condition When Applied

Typical Cost ($/ln-mi) Cost Range ($/ln-mi)

0 0 Initial Construction - $657,500 $210,000 - $2,000,000

8 6-10 Crack Treatment Good $6,000 $3,000 - $10,000

12 10-14 Surface Treatment Good $15,000 $10,000 - $30,000

20 18-22 Mill & Overlay (1st Overlay) Fair $155,000 $145,000 - $175,000

23 21-25 Crack Treatment Good $6,000 $3,000 - $10,000

27 25-29 Surface Treatment Fair $15,000 $10,000 - $30,000

35 33-35 Mill & Overlay (2nd Overlay) Fair $155,000 $145,000 - $175,000

38 36-40 Crack Treatment Good $6,000 $3,000 - $10,000

43 41-45 Surface Treatment Fair $15,000 $10,000 - $30,000

50 47-53 FDR/Reconstruction - $657,500 $210,000 - $2,000,00058 56-60 Crack Treatment Good $6,000 $3,000 - $10,000

62 60-64 Surface Treatment Good $15,000 $10,000 - $30,000

70 68-72Mill & Overlay (1st Overlay after FDR/Reconstruction)

Fair $155,000 $145,000 - $175,000

FDR/Reconstruction Strategy (Flexible Pavements)

Life Cycle Cost Results

MnDOT’s Post-TAMP Pavement Asset

Management Initiative

“Understand Life Cycle Costs of Major Assets” – Maintenance costs (TAMP)

Phase 1: Determine how much “labor, equipment, material (LEM)” was spent at certain asset conditions?

Pavement Entering LEM in RCA; assigning reference points for certain (maint.) source codes RCA RECORD is being divided into segments; matched to condition data from pavement Van (M-records)

Asset Management WIG ProjectAgency goal

THREE M-RECORDS

Roadway Segment

0 1 2 3 4RCA RECORD (TOTAL LEM)

Reference Points

LEM1LEM2 LEM3

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Pavement Van Condition Data LEM From Work Orders

Asset Management WIG ProjectBusiness Intelligence (web-report)

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Condition of Road Improves

Focus on RED LINE: As Condition Improves, Maintenance

spends less money/mile

Typical Pavement

Age* (yrs)

Pavement Age

Range** (yrs)

TreatmentTypical Condition

When AppliedTypical Cost ($/ln-mi)*** Cost Range ($/ln-mi)***

0 0 Initial Construction - $657,500# $210,000 - $2,000,000

8 6-10 Crack Treatment Good $6,000 $3,000 - $10,000

12 10-14 Surface Treatment Good $15,000 $10,000 - $30,000

20 18-22 Mill & Overlay (1st Overlay) Fair $155,000 $145,000 - $175,000

23 21-25 Crack Treatment Good $6,000 $3,000 - $10,000

27 25-29 Surface Treatment Fair $15,000 $10,000 - $30,000

35 33-35Mill & Overlay (2nd

Overlay)Fair $155,000 $145,000 - $175,000

38 36-40 Crack Treatment Good $6,000 $3,000 - $10,000

43 41-45 Surface Treatment Fair $15,000 $10,000 - $30,000

50 47-53 FDR/Reconstruction - $657,500# $210,000 - $2,000,000

58 56-60 Crack Treatment Good $6,000 $3,000 - $10,000

62 60-64 Surface Treatment Good $15,000 $10,000 - $30,000

70 68-72Mill & Overlay (1st Overlay after FDR/Reconstruction)

Fair $155,000 $145,000 - $175,000

Pavement Life Cycle Cost Strategy

Thank You!

For further information contact Kirby Becker

Kirby.Becker@state.mn.us / (651) 366-3740

Or visithttp://www.dot.state.mn.us/assetmanagement