ROADS PROVISION ROADS PROVISION DEPARTMENT DEPARTMENT Pavement Pavement Management Management
Jan 19, 2018
ROADS PROVISION ROADS PROVISION DEPARTMENTDEPARTMENT
Pavement Pavement ManagementManagement
Durban Road Network Durban Road Network OwnershipOwnership
Primary Road Owners
• eThekwini Municipality
• KZN DoT
• SANRAL
MA RG ARE T M
N CA DI AV E
Road NetworkSANRALKZNeTHEKWINI
LEGEND N
EW
S
eThekwini Road Network eThekwini Road Network StatisticsStatistics
RISFSA
Category
Road Lengt
h(km)
Road Lengt
h(km) PMS
Category
Road Length(km)
Road Lengt
h(km)
Total Road Length (km)Surfac
ed Gravel Surfaced Gravel
2 117 0 A 117 0 1173 359 0 B 1 343 0 1 3434 2 259 0 C 1 275 0 1 2755 3 192 1 052 D 3 192 1 052 4 244
Total 5 927 1 052 Total 5 927 1 052 6 979
eThekwini Road Network eThekwini Road Network ManagementManagement
New Surfaced Roads
PrivateDevelopmentHousing
Pavement Design Report Materials As Built Letter of Compliance
Existing SurfacedRoad Network
RoadRehabilitation
Des
ign
&Co
nstru
ctio
n
Pavement ManagementSystem
Dat
aCa
ptur
e
RoutineMaintenance
NetworkRehabilitationProgramme
Prioritization &Optimization
Capital Roads
Gravel RoadNetwork
Rout
ine &
Plan
ned
Main
tena
nce
Des
ign
&Co
nstru
ctio
n
New Surfaced Roads
PrivateDevelopmentHousing
Handover to Roads Provision Pavement Design Report Materials As Built Letter of Compliance
Existing SurfacedRoad Network
RoadRehabilitation
Des
ign
&Co
nstru
ctio
n
Road &StormwaterMaintenance
Pavement ManagementSystem
Dat
aCa
ptur
e
NetworkRehabilitationProgramme
Prioritization &Optimization
Capital Roads
Gravel RoadNetwork
Des
ign
&Co
nstru
ctio
n
Des
ign
&Co
nstru
ctio
n
Des
ign
&Co
nstru
ctio
n
0102030405060708090
100
2003 2005 2007 2009Year of Assessment
Aver
age R
oad
Net
work
Visu
al Co
nditi
on In
dex
VeryPoor
Poor
Fair
VeryGood
Good
eThekwini Surfaced Road eThekwini Surfaced Road Condition TrendsCondition Trends
eThekwini
SANRAL
KZNDoT
PMS Road CategoriesOveral
lA B C D
79.5 81.2 80.2 79.8 80.3 85.3 73.5
Durban Average Surfaced Road Durban Average Surfaced Road Condition 2009Condition 2009
Road Rehabilitation Budget Road Rehabilitation Budget AllocationAllocation
050
100150200250300350400
2004/ 05 2005/ 06 2006/ 07 2007/ 08 2008/ 09 2009/ 10 2010/ 11
Financial Year
Budg
et A
lloca
tion
(R M
illio
n)
2009 Visual Condition 2009 Visual Condition Assessment OutcomesAssessment Outcomes
Length (km) of network - VCI < 30 7.3
Length (km) of category A & B roads - VCI < 50 24.8
% of category C & D roads - VCI < 50 4.7
Average VCI for entire network 80.3
ConstraintsConstraints• All roads Visual Condition Index (VCI) > 30All roads Visual Condition Index (VCI) > 30• All category A & B roads VCI > 50All category A & B roads VCI > 50• < 10% category C & D roads VCI < 50< 10% category C & D roads VCI < 50• Average VCI of entire network > 70Average VCI of entire network > 70
OutcomesOutcomes
Consequential Road Life-Consequential Road Life-spansspans
PMS Category A B C and D
Total Rehab. (% Length of Category) 3.1 4.9 2.7
Years Between Rehab. Treatments 32 21 37
Standard Design Lifespan (Years) 30 20 20
Challenges …. 1Challenges …. 1
Condition Assessment• Based on Visual Condition Index (TRH 22)
• Subjective
•Quality and significance of data
• Excessive data captured for minor roads (75% of network)
•Slow assessment rate
• Mechanical testing preferable
•Generates large quantities of data
Challenges …. 2Challenges …. 2
Network Level versus Project Level Analysis• 60% conversion rate (by project)
• Optimisation on greatest benefit/cost - not area
• Analysis based on links (intersection to intersection)
Network Variability• Ad hoc development (intersection
improvements, widenings, etc.)
• No “As Built” records
Challenges …. 3Challenges …. 3
GIS Issues• Corporate GIS Co-ordination
• Subservient to Property Management System
• Asset identifier (Road ID) not “owned” by Roads Provision Department
Accounting Issues• Legislated register (MFMA) on
accounting system (JD Edwards)
• Separate database from GIS & PMS
Challenges …. 4Challenges …. 4
Skills Shortages• Highly specialised field
• Few practitioners country wide
• Roads Provision staff :-
1 Technologist
1 Technician (no experience)
1 GIS officer
Thank You