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
Curbs
Sidewalks
Bridges
Other Structures
Traffic Signals
Street Signs
Street Lights
268.8 Km
337.2 Km
179.6 Km
11
22 large culverts, walls
66 intersections
9,200
5,100
Transportation Network, cont’d
Roads by Official Plan (OP) Class
Arterial
81.7 Km
30.4 %
Collector
38.3 Km
14.2 %
Local
148.8 Km
55.4 %
Total
268.8Km
Roads by Surface Material
Asphalt
194.3 Km
72.3 %
59.1 Km
22.0 %
Concrete
9.3 Km
3.5 %
Other
6.1 Km
2.2 %
Total
268.8Km
Asphalt on Concrete
Sewer Network
Sanitary Pipes
188.9 Km
Sanitary Manholes
2,420
Sanitary Pump Stations 5
Combined Pipes
Combined Manholes
Storm Pipes
Storm Manholes
65.0 Km
750
127.1 Km
1,800
Storm Catchbasins
SWM Facilities
Main Drainage Ditches
4,490
7
29.5 Km
Water Network
Pressure Zones
Water Pipes
Fire Hydrants
Valves – Excluding FH
Valves
1
276.4 Km
1305
1900
Water Network, cont’d
Watermain Pipe Materials
Material
Length
(KM)
Length
(%)
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
2.2
50 + host pipe
remainder
Cured-In-Place (CIPP) Reline 6
Service Life
(Yrs)
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
Source: Asset Management Plan Ph 2, 2006
$651.5M
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
Roads
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 %
Marginal
50-59
30.9
11.7 %
32 %
Poor
40-49
16.3
6.1 %
17 %
Very Poor
<40
1.4
0.5 %
4%
* Source: Canadian Infrastructure Report Card, Vol 1, 2012
Condition Summary, cont’d
Bridges – 2010 Structure Inspection
Condition
BCI
Number of
Bridges
Good
70-100
9
Fair
60-70
1
Poor
<60
1
Condition Summary, cont’d
Sidewalks
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
Condition Summary, cont’d
Wastewater
Stormwater
Cond Length Percent
(Km)
Cdn
Avg*
Cond Length Percent
(Km)
Cdn
Avg*
1
41.8
19.5
33.7
1
22.1
20.2
40.5
2
88.7
41.4
36.1
2
46.6
42.6
36.2
3
48.1
22.5
22.4
3
20.9
19.0
17.7
4
25.1
11.7
6.5
4
14.4
13.2
4.9
5
10.5
4.9
1.2
5
5.5
5.0
0.8
* Source: Canadian Infrastructure Report Card, Vol 1, 2012
Condition Summary, cont’d
Watermains
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
Average Annual
Linear Infrastructure Expenditure
2008 - 2011
Roads
Sewer
Water
Source: TCA annual asset additions
$3.1 M
$1.2 M
$1.6 M
What Needs to be Done?
Renewal/Replacement/Repair of:
Roads
(PCR <60, Local
Roads<55
38 Km
Sidewalks
23 Km
Sewers
55 Km
Water
60 Km
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.