pavement management

1
Introduction to GIS In Pavement Management
Alex Rocco and Barry WaiteCity of Carson
Geographic Services Division
2
Is Pavement Management Important?
100 miles of street has a replacement value of
approximately 42,000,000. 100 miles 5280
ft/mile x 36ft 19,000,000ft2 19,000,000ft2
1 yd2 / 9ft2 2,100,000 yd2 Average
replacement value per yd2 20.00 20.00 /
yd2 2,000,000 yd2 42,000,000
Good planning and preventative maintenance saves
.
3
Pavement Deterioration Curve
1.00 spent here will cost
40 Drop
Condition
75 Time
40 Drop
4.00 - 8.00 here
12 Time
Time
Source American Public Works Association
4
Pavement Deterioration
Crop circles?
5
Tanks a lot!
M1A1 Abrams Tank
6
Pavement Deterioration
Not a trash truck
7
Pavement Deterioration
Bradley Fighting Vehicle
8
Why integrate GIS and Pavement Management?

• Better visualization of current and expected
  conditions
• Better analysis
• Aggregate with other geographic features
• Notify residents and businesses
• Avoid shotgun approach
• Better CIP planning
• Reduce duplication of data

TM
9
Fundamental Elements of Pavement Management
Systems

• Data Collection
• Data Analysis
• Reporting/Mapping

10
Analysis

• Relate the data to any geographic feature
• Calculate pavement area for any geography
• Overlay projects with other activitiesto avoid
  conflicts
• Cluster projects

TM
11
Cluster Projects

• Avoid maintaining a street in 1998 and then
  anadjoining street in 1999.
• Resurface and repair whole subdivisions
• Simplify and reduce the cost of notifications

Clustering
12
CIP
Avoid maintaining a street in 1998 and then
thestorm drain under it in 1999.
13
CIP
Oops!
14
Maps

• Functional Classification
• Yearly Improvement Plans
• Pavement Condition
• Future Condition
• Traffic Volumes

TM
15
Maps
Functional Classification
Arterials
16
Tabular Data
17
Maps
18
Maps
19
Maps
Traffic Volumes
20
Reporting

• Priorities
• Current conditions
• Recommended corrective action
• Long range plan

TM
21
Avoid Redundant Data Collection
22

• Arc-node Topology

Linking GIS and Pavement Management
2
1
PM From To 1 A St B St 2 B St C St
GIS From To 1 A St B St 2 B St C St
23

• Arc-node Topology

Linking GIS and Pavement Management
2
1
PM From To 1 A St 500ft 2 500 ft
B St 3 B St C St
GIS From To 1 A St B St 2 B St C St
24

• Arc-node Topology

Linking GIS and Pavement Management
1
2
3
GIS From To 1 A St 500ft 2 500 ft
B St 3 B St C St
PM From To 1 A St 500ft 2 500 ft
B St 3 B St C St
25

• Arc-node Topology

Linking GIS and Pavement Management
2
1
GIS From To 1 A St B St 2 B St C St
PMS From To 1 A St C St
26
The Problem
Concrete
Brick
Asphalt
Roads Coverage
Good
Bad
2 lanes
4 lanes
27
A Solution is Dynamic Segmentation
ARCS
1
2
4
5
3
6
28
Dynamic Segmentation
ARCS
0.0
ROUTES
100
1
5.5
7.0
15.0
10.5
100
75
100
2
4
5
3
6
29
Dynamic Segmentation
2.0
0.0
0.0
Good
0.0
6.7
4.7
10.4
13.1
Fair
Poor
9.3
15.0
Asphalt
7.2
15.0
Concrete
15.0
9.3
15.0
Resurface
30
Geography is the Missing Link!!!

• Better visualization of current and expected
  conditions
• Better analysis
• Aggregate with other geographic features
• Notify residents/businesses
• Avoid shotgun approach
• Better CIP planning
• Reduce duplication of data

31
Do as we say, not as we do

• Make sure you or your consultant has a plan for
  integrating GIS and pavement management
• Use a consultant who has GIS staff in-house
• Collect other data while collecting street
  conditions
• Signs
• Signals
• Manholes (personnel access covers)
• Water valves
• Catch basins
• Visit other agencies who have been through this
  process
• Do not allow tanks on your streets
• Eat your vegetables

32
Lets Go!