CITY OF CORNWALL
STATE OF INFRASTRUCTURE
OCTOBER
15, 2012
Assets Managed by
Infrastructure Planning Division
•
Transportation Network
•
Sewer and Drainage
Network
•
Water Network
Transportation Network
Roads
268.8 Km
Curbs
337.2 Km
Sidewalks
179.6 Km
Bridges
11
Other Structures
22 large
c
ulverts, walls
Traffic Signals
66 intersections
Street Signs
9,200
Street Lights
5,100
Transportation Network, cont’d
Roads by Surface Material
Asphalt
194.3
Km
72.3 %
Asphalt on Concrete
59.1 Km
22.0 %
Concrete
9.3 Km
3.5 %
Other
6.1
Km
2.2 %
Total
268.8Km
Arterial
81.7 Km
30.4 %
Collector
38.3 Km
14.2 %
Local
148.8 Km
55.4 %
Total
268.8Km
Roads by Official Plan (OP) Class
Sewer Network
Sanitary Pipes
188.9 Km
Sanitary Manholes
2,420
Sanitary Pump Stations
5
Combined Pipes
65.0 Km
Combined Manholes
750
Storm Pipes
127.1 Km
Storm Manholes
1,800
Storm
Catchbasins
4,490
SWM Facilities
7
Main Drainage
Ditches
29.5 Km
Water Network
Pressure Zones
1
Water Pipes
276.4 Km
Fire Hydrants
1305
Valves
–
Excluding FH
Valves
1900
Water Network, cont’d
Material
Length
(KM)
Length
(%)
Service Life
(Yrs)
Cast Iron (1880 to 1919)
3.2
1.2
120
Cast Iron (1920 to 1939)
32.1
11.6
100
Cast Iron (after 1939)
73.4
26.6
75
Ductile Iron
48.5
17.6
90
Steel
2.1
0.8
55
Concrete Pressure Pipe
19.9
7.2
100
Polyvinyl Chloride
(PVC)
90.4
32.7
110
Cured
-
In
-
Place (CIPP) Reline
6
2.2
50 + host pipe
remainder
Watermain
Pipe Materials
Asset Value
Sanitary Sewer (
incl
MH’s)
$80.8M
Combined Sewer (
incl
MH’s)
$50.3M
Storm Sewer (
incl
MH’s)
$86.8M
Water Network
(
incl
valves & hydrants
$151.0M
Roads
$208.0
M
Bridges
$17.2M
Street Lights
$14.3M
Traffic Signals
$4.5M
Street Signs
$2.4M
Sidewalk
$27.5M
Structures
–
Culverts
CSP Super span
$1.5M
Stormwater
Main Drains
$5.0M
Stormwater
Management
Facilities
$0.2M
Sanitary Sewer Pump Stations
$2.0M
TOTAL
$651.5M
Source: Asset Management Plan Ph 2, 2006
Condition Investigation
Roads
•
Regular road patrols by MW to address Minimum
Maint
Stds
, O
Reg
239/02
•
Biannual condition evaluation => assigned Pavement Condition Rating (PCR)
•
Development of pavement deterioration curves
Bridges & Structures
•
Biannual structure inspection
–
bridges, large span culverts (>3m),
retaining walls
•
Identification of Bridge Condition Index, deficiencies for other structures
Sidewalks
•
Condition assessment completed in 2012
•
Graded from 1 (excellent) to 5 (poor)
Condition Investigation, cont’d
Sewers
•
Zoom camera inspect pipes at manhole junctions
•
CCTV inspect sewers that zoom screening identified as having structural concerns
•
Sewers rating based
ona
UK standard
–
Water Resources Centre (
WRc
)
•
Ratings are assigned for Structural Condition (SC) and Potential for Blockage (PB)
SC
Grade
Implication
5
Collapsed or collapse imminent
4
Collapse likely in the
near future
3
Collapse
unlikely in near future but future deterioration likely
2
Minimal collapse risk in short
term but potential for future
deterioration
1
Acceptable structural condition
Condition Investigation, cont’d
Watermains
•
Closed system, more difficult than sewers to inspect
•
Pressurized network, where failure can damage adjacent
facilities/buildings
•
Stresses and metal fatigue affect failure
•
Service life is a typically used proxy for condition, based on statistically
developed deterioration models
•
Analysis of low free chlorine residual testing
-
0.2mg/l to 0.5 mg/l
•
Modelled fire flow results
–
5,000 l/m fire applied on max day
Infrastructure Planning Documents
•
Asset Management Plan
–
Water, Wastewater & Transportation Networks
•
Phase 1
–
August 2005
•
Phase 2
–
May 2006
•
Critical Infrastructure Report
–
December 2006
•
Interceptor & CSO Outlet Condition Investigation
–
November 2009
•
Sewer Separation Plans
•
Fly Creek Area
–
2002
•
Brookdale
and Lower Fly Creek
-
2005
•
Storm of Sept 30, 2010 Analysis
-
Ongoing
Risk
A combination of the probability of asset failure and a
forecast of the severity of the direct and indirect impact
–
consequences
–
of failure on the level of service to
customers and the environment.
Asset Condition Demo
Condition Summary
Condition
PCR
Length (Km)
Percent
Cdn
Avg
*
Very Good
80
-
100
104.5
39.4 %
22 %
Good
70
-
79
62.4
23.5 %
26 %
Satisfactory
60
-
69
49.7
18.7 %
32 %
Marginal
50
-
59
30.9
11.7 %
Poor
40
-
49
16.3
6.1 %
17 %
Very Poor
<40
1.4
0.5 %
4 %
Roads
* Source: Canadian Infrastructure Report Card,
Vol
1, 2012
Condition Summary, cont’d
Condition
BCI
Number of
Bridges
Good
70
-
100
9
Fair
60
-
70
1
Poor
<60
1
Bridges
–
2010 Structure Inspection
Condition Summary, cont’d
Condition
Length (Km)
Percent
1
54.5
30.4
2
59.7
33.3
3
41.7
23.2
4
18.5
10.3
5
4.9
2.7
Sidewalks
Condition Summary, cont’d
Cond
Length
(Km)
Percent
Cdn
Avg
*
1
41.8
19.5
33.7
2
88.7
41.4
36.1
3
48.1
22.5
22.4
4
25.1
11.7
6.5
5
10.5
4.9
1.2
Wastewater
Cond
Length
(Km)
Percent
Cdn
Avg
*
1
22.1
20.2
40.5
2
46.6
42.6
36.2
3
20.9
19.0
17.7
4
14.4
13.2
4.9
5
5.5
5.0
0.8
Stormwater
* Source: Canadian Infrastructure Report Card,
Vol
1, 2012
Condition Summary, cont’d
Remaining
Years
Length
(Km)
Percent
0
-
20
80.0
28.9
21
-
40
37.1
13.4
41
-
60
53.8
19.5
61
-
80
26.5
9.6
>
81
78.9
28.6
Watermains
Average Annual
Linear Infrastructure Expenditure
2008
-
2011
Roads
$3.1 M
Sewer
$1.2 M
Water
$1.6 M
Source: TCA annual asset additions
What Needs to be Done?
Roads
(PCR
<60, Local
Roads<55
38 Km
Sidewalks
23 Km
Sewers
55 Km
Water
60 Km
Renewal/Replacement/Repair of:
General Approach
Combined Sewer Areas:
•
Oldest infrastructure and where combined sewers require separation
•
Typically reconstruction is recommended if funds are available
Separated Sewer Areas:
•
These are newer areas typically meeting design standards
•
Rehabilitation of individual assets, shave & pave roadway
Next Steps
•
Identify recommended intervention to address
deficiency for each identified asset.
•
Prepare cost estimates for recommended
work.
•
Prioritize interventions based on risk and
coordination of asset needs.
•
Develop budget and financing alternatives.
Enter the password to open this PDF file:
File name:
-
File size:
-
Title:
-
Author:
-
Subject:
-
Keywords:
-
Creation Date:
-
Modification Date:
-
Creator:
-
PDF Producer:
-
PDF Version:
-
Page Count:
-
Preparing document for printing…
0%
Σχόλια 0
Συνδεθείτε για να κοινοποιήσετε σχόλιο