22 nov re estabilishing pms

Design and Implementation of Road Maintenance Reform. Republic of Moldova

Re- estabilishing PMSNov 22, 2010

Design and Implementation of Road Maintenance Reform


04/10/23

1. Management Cycle

2. Data collection and Road inventory

3. Program and Project analysis

4. Modern Road works planning

Agenda

2


Management Cycle


0-500 500-15001500-40004000-7000 7000-0

20

40

60

80

100

120

Important Elements in the plan: Name of section Geographical location LengthType of works Cost estimates Timing of work

Packaging appropriatemix of Road works

with regards to available budget

Vägm arkering

V ägtrum m or

Bergarbeten, borrn ingsprängning M ätn ing av

vägytans tills tånd

S länterE rosionsskydd

B eläggning

Bärlager

Förstärkn ingslager

T jä lsskyddU ppfrysande b lock

Ö verbyggnadm ateria lva l och d im ensionering

Terrassm ateria lAvvattn ingD ränering

B ärighetsm ätn ingFa llv iktsdeflektom eter

April- September

AugustOctober

December- March

March - October

September- NovemberNew plan

November- December

August-October

Road Class

Paved Roads Unpaved Roads

Good Fair Poor Bad Good Poor Bad National Roads 4 6 8 >8 - - -Secondary 5 7 9 >9 6 8 10


Road Inventory/Inspectionneeds

Engineering


To carry out

• Describe the Road Network– Data collection (condition data)

• Quantifying the amount of road works needed• Timing the road works (periodic mtnce, rehab)• Present a (usually) 3-5 year plan• Check the available annual budget• Adjust the planned activities


The content in an engineering plan

Usually available data: Name of section Geographical location Length Cost estimates Timing of work


The content in an engineering plan

Usually available data: Name of section Geographical location Length Cost estimates Timing of work

Developing the concept Name of section Geographical location Length Cost estimates for different strategy Timing of work Road Network Condition Defined Rehab/Maintenance strategy RN Condition during analysis period (5 Y) Objective of Road Network Expenditures Benefit and Cost analysis considering

– Road Agency Cost – Road User Benefit

Prioritization between sections Different budget scenarios/RD


Modern Road Maintenance planning

0-500 500-1500 1500-40004000-7000 7000-0

20

40

60

80

100

120

GIS

HDM 4

Road Network DevelopmentCost & Benefit AnalysisPrioritization of worksQuantity of worksBudget appraisal, etc..

Visual Inspection

Bump IntegratorIRI

Distress Mode

All Structural Cracking

(%)

Wide Structural Cracking

(%)

Transverse Thermal Cracking

(%)

Ravelling (%)

No. potholes per km

Edge break (m² per km)

Mean rut depth (mm)

New 0 0 0 1 0 0 2

Good 5 0 0 10 0 10 5

Fair 15 9.5 0 20 5 100 15

Poor 20 15 0 25 20 200 20

Bad 25 19 0 30 50 300 25


The plan has to address:

• Road Network Condition development with regards to different budget scenarios

• Budget allocation:– Routine maintenance– Periodic maintenance – Rehabilitation/reconstruction works


Proposed Road Network standards

TRAFFIC CLASSES

TERM

(USED FOR MODELLING IN HDM4)

SECTIONS > 1000M

Mean Roughness (IRI) Mean Rutting (mm)

Periodic Mtnce

Rehabilitation Reconstruction Periodic Mtnce

0-500 Low Traffic (L. Tra) 5.5 7.0 10.0 25

501-2000 Low – Medium Traffic (LMTra) 5.5 6.0 10.0 25

2001-4000 Low-Medium high Traffic (LMHTra)

5.5 6.0 10.0 18

4001-7000 Medium-High Traffic (MHTra) 4.5 5.0 9.0 18

> 7000 High Traffic (HTra) 4.5 5.0 8.0 14


Road works


Assigned Rehabilitation Maintenance 4 different standards

1. Do minimum (only Routine mtnce)

2. Minimum Standard (A)

3. Moderate Standard (B)

4. Required Standard (C)

A, B, C is compared to Do minimum

( Do Minimum = basically, routine maintenance )


Routine maintenance

TYPE WORK ACTIVITY

INTERVENTION CRITERIA FOR ROUTINE MAINTENANCE

UNIT COSTS

LEI (m2)

Minimum (A)

Moderate (B)

Required (C)

Routine

Crack Sealing Wide structural cracking > 10%

Wide structural cracking > 7%

Wide structural cracking > 5%

67.0

Edge repair Edge break > 5 m2/km

Edge break > 2 m2/km

Edge break > 1 m2/km

134.0

Pothole Patching

Pothole > 4 no/km

Pothole > 2 no/km

Pothole > 1 no/km

167.0


TYPE WORK ACTIVITY

INTERVENTION CRITERIA FOR MAINTENACE PROGRAM

UNIT COSTS

LEI (m2)

Do

Min

imum

(ta

ble

6)

Rou

tine

mai

nten

ance

onl

y

Minimum (A)

Moderate (B)

Required (C)

Periodic maintenance

Surface dressing with shape correction 20 mm

5.5< IRI < 6.5

5.0 < IRI < 6.5 4.5 < IRI < 6.5 107,0

Rehabilitation 40 mm asphalt on existing material

IRI > 8.0 IRI > 7.0 207,7

Reconstruction Asphalt mix on granular base 50 mm

IRI > 10 268,0

Strategies for roads with traffic < 500


Strategies for roads with traffic > 501 < 2000

TYPE WORK ACTIVITY

INTERVENTION CRITERIA FOR REHABILITATION PROGRAM

UNIT COSTS

LEI (m2)

Do

Min

imum

R

outi

ne

mai

nten

ance

only

Minimum (A)

Moderate (B)

Required (C)



5.5< IRI < 6.5 5.0 < IRI < 6.5 4.5 < IRI <

6.5

127,3


IRI > 8.0 IRI > 6.0 247,9

Reconstruction

40 mm asphalt on 60 mm asphalt base

IRI > 10 469



TYPE WORK ACTIVITY


UNIT COSTS

LEI (m2)

Do

Min

imum

R

outi

ne

mai

nten

ance

only

Minimum (A)

Moderate (B)

Required (C)



5.5< IRI < 6.5 4.5 < IRI < 6.5 4 < IRI < 6.5 147,4


IRI > 7.0 IRI > 6.0 247,9

Reconstruction 50 mm asphalt on 60 mm Asphalt Base

IRI > 10 556,1



TYPE WORK ACTIVITY


UNIT COSTS

LEI (m2)

Do

Min

imum

R

outi

ne

mai

nten

ance

only

Minimum (A)

Moderate (B)

Required (C)



5.5< IRI < 6.5 4.5 < IRI < 6.5 4 < IRI < 6.5 147,4


IRI > 7.0 IRI > 6.0 247,9


IRI > 10 703,5



TYPE WORK ACTIVITY


UNIT COSTS

LEI (m2)

Do

Min

imum

R

outi

ne

mai

nten

ance

only

Minimum (A)

Moderate (B)

Required (C)



5.5< IRI < 6.5 4.5 < IRI < 6.5 4 < IRI < 6.5 147,4


IRI > 7.0 IRI > 6.0 247,9


IRI > 10 770,5

22 nov re estabilishing pms

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