CITY OF CORNWALL

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Nov 18, 2013 (3 years and 7 months ago)

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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.