CITY OF CORNWALL

STATE OF INFRASTRUCTURE

OCTOBER 15, 2012

Assets Managed byInfrastructure Planning Division

• Transportation Network• Sewer and Drainage Network• Water Network

Transportation Network

Roads 268.8 KmCurbs 337.2 KmSidewalks 179.6 KmBridges 11Other Structures 22 large culverts, wallsTraffic Signals 66 intersectionsStreet Signs 9,200Street Lights 5,100

Transportation Network, cont’d

Roads by Surface MaterialAsphalt 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 NetworkSanitary Pipes 188.9 KmSanitary Manholes 2,420Sanitary Pump Stations 5Combined Pipes 65.0 KmCombined Manholes 750Storm Pipes 127.1 KmStorm Manholes 1,800Storm Catchbasins 4,490SWM Facilities 7Main Drainage Ditches 29.5 Km

Water Network

Pressure Zones 1Water Pipes 276.4 KmFire Hydrants 1305Valves – 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 ValueSanitary 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 InvestigationRoads

• 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

WastewaterCond 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 MSewer $1.2 MWater $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.