Transportation Asset Management is “an ongoing process of

Transportation Asset Management is...“an ongoing process of maintaining, upgrading, and operating physical

assets cost effectively, based on a continuous physical inventory and condition assessment” (PA 499, of 2002).

What Destroys A Pavement?• Water–weakensstructure• Traffic–excessiveloadings&volumes• Environment–temperature&oxidation

Pavement Surface Evaluation and Rating (PASER)ThePavementSurfaceEvaluationandRating(PASER)systemisavisualpavementsurveymethodologybasedonthenumber,type,andextentofdistressespresentinapavement.ThePASERscaleis1to10,with10beingbrandnewpavementand1beingtotallyfailed.Ingeneral,pavementswithaPASERof8to10needlittleornomaintenance.PavementswithPASERscoresof5to7needcapitalpreventativemaintenance,andpavementswithPASERscoresof1to4needstructuralimprovement.

Do you use Asset Management every day?

Yes. Most people use asset management every day to manage things like main-tenance on a car, repair and upkeep of a home or even with things as basic as health care. Businesses use asset manage-ment principles extensively.

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http://www.michiganltap.org906-487-2102

Transportation Asset Management for Local Officials

http://www.michiganltap.org

Transportation Asset Management for Local Officialshttp://www.michiganltap.org

906-487-2102

Window of OpportunityIfyouapplyafixtoapavementtooearlyortoolateinthepavement’slife,youarenotlikelytogaintheoptimalbenefitfromthefix.Eachpavementfixhasawindowofopportunityforpreventivemaintenance or structural improvement.

Mix-of-Fixes Approach to PavementsAmixoffixesisapavementmanagementstrategyofapplyingtherightfixattherighttimeintherightplace.Thisapproachmakespreventivemaintenancethepriority,capitalizingonthe“win-dowsofopportunity”fortreatmentwhileusingrehabilitationandreconstructiononlywhenneces-sary.Thegoalistokeepgoodpavementsingoodconditionlonger,thusdelayingtheneedformorecostly rehabilitation and reconstruction projects.

Remaining Service Life (RSL)

Extended Service Life (ESL)

Key Pavement Management Definitions

Critical Distress Point (CDP) – Point when pavement distress changes from needing preventive maintenance to need-ing structural improvement.

Remaining Service Life (RSL) – Time in years from the present to the point when pavement distresses are structural (CDP) and preventive maintenance treatments are no longer cost effective.

Extended Service Life (ESL) – Time in years added to the current RSL based on the type of fix used.



Structural Improvements

What it is How long it lastsStructural overlay

Anasphaltlayer1.5”to3”thickontopoftheexistingpavementthatbuilds structural strength into the pavement (pavement can be milled prior to placement to remove severe surface imperfections)

5-10years,possiblylonger

Crush and shape

Pulverizedexistingdistressedasphaltsurfacemixedwiththeexistingaggregatebase,thennewhot-mixasphaltsurfaceisplaced

Reconstruction Newroadbyremovingpavementandthebaseand/orsubbase,correct-inggeometricproblems(verticalorhorizontalalignment),upgradingutilities,correctingdrainageproblems,andrebuildingtheroadway(mostexpensiveoption)

Preventive Maintenance Treatments

What it is How long it lastsCrack seal Asphaltsealantthatsealsoutwateranddebris,whichwillfurtherde-

gradethepavement,byfillingdiscretecracksunder¾”wide1-2years

Fog seal Asphaltemulsionsurfacecoatingplacedovernewerpavementstofillhair-linecracksandpreventhardeningtheasphaltbinder

1-2years

Slurry seal Asphaltemulsion,aggregateandportlandcementmixtureappliedtotheroadsurfacetosealpavementfromwateranddebris

3-6years

Microsurfacing Polymer-modified asphalt emulsion, aggregate, and portland cement appliedtotheroadsurfacetosealpavementfromwateranddebris,orused to fill ruts or correct cross slope problems

3-6yearsormore,ifproperly applied

Seal coat (chip seal)

Liquidasphaltemulsionfollowedbyaggregatechipsapplied(insingle,double,ortriplelayer)overanasphaltpavementtocreateawaterproofmembrane,sealingpavementfromwateranddebrisandincreasingsurface friction

3-6years,possiblylonger

Formoreinformationsee:MinnesotaDepartmentofTransportation“BestPracticesHandbookonAsphaltPavementMaintenance”athttp://www.mnltap.umn.edu/publications/handbooks/documents/asphalt.pdf


906-487-2102

Michigan Transportation Asset Management Council (TAMC) TheMichiganTransportationAssetManagementCouncil(TAMC)iscomposedofrepresentationfrom:• Localagencies• CountyRoadAssociationofMichigan• MetropolitanPlanningOrganizations• MichiganMunicipalLeague• MichiganAssociationofCounties• MichiganAssociationofRegions• MichiganTownshipsAssociation• MichiganDepartmentofTransportation• MichiganDepartmentofTechnology• MichiganMunicipalLeague

TheTAMCisworkingto:• ImplementrecommendationsofAct51Funding

Committee• Movefromneedsstudiestomanagingpavements

and bridges in the state• Seetheroadsystemasthecustomerseesit–with-

out boundaries• Workcooperativelyratherthancompetitively

betweenroadowningagencies.



Michigan TAMC Quick Facts

• Established by Act 499 of Public Acts of 2002

• Resources include Act 499 of Public Acts of 2002, Act 199 of Public Acts of 2007, and the Asset Management Guide for Local Agencies

• http://michigan.gov/tamc


Documents

Transportation Asset Management is “an ongoing process of