Pavement Management System Presentation to Township of Langley Council, June 22, 2009

The Township of Langley 2008 Pavement Management System Study Prepared by EBA Engineering Consultants Ltd.

Contents

Project Background

Data Collection

Road Network Present Conditions in 2008

Road Network Assessment and Comparison to other Agencies

Highway Development and Management (HDM) Distress Prediction Modeling

Road Network Predicted Condition in 2018

Analysis Inputs

Analysis Results

Road Network Predicted Condition at Current Funding Levels

Road Network Predicted Condition at Recommended Funding Levels

Project Background

Township of Langley’s Pavement Management History

Pavement Management System Installed in 2002/2003;

The last full Pavement Condition Surveys were conducted in:

2005 MRN Roads (TransLink);

2007 Major Roads (Arterial, Collector & Grid roads);

2005 & 2006 Local roads (Minor roads).

The objectives of this study are:

Update analysis to reflect current construction pricing;

Analysis of Major, local and MRN roads;

Determine the optimal annual funding level that will indefinitely sustain the

quality and value of the pavement network; and

Integrate all pavement condition and analysis results in the Township’s GIS;

Update the City’s in-house systems to incorporate latest work.

Pavement Inventory

Township of Langley has approximately 930 centreline km of road

(813 centreline-km of Paved road considered in analysis)

Major Roads Analysis Local Roads Analysis * Includes Hwy 1 EB and WB, Hwy 10, unsurveyed parts of 264 St & 264 St Diversion MRN Roads Analysis 426 ) Local 121 Grid 59 ) MRN 106 Collector 101 Arterial Length (cl-km) Class

Township of Langley’s Road Network Road Network Classification Provincial Highways MRN Routes Arterial Routes Collector Routes Grid Local Routes Private/ new locals (Not Surveyed) Municipal Boundary

All Cracked Area (ACA) as a Measure of Pavement Condition 100% 30% V Poor 30% 10% Poor 10% 5% Fair 5% 1% Good 1% 0% V Good Colour To ACA From ACA Condition

Data Collection Cracking = 0 - 1 % Preventative Maintenance (crack sealing) $1.70 - $3.00/m 2 Cracking = 1 - 10 % Overlay, Grind and Patch $15 - $30/m 2

Data Collection Cracking = 10 - 30% (Overlay, Grind and Patch) $30 - $40/m 2 Cracking > 30% (Replace Asphalt) $40 - $65/m 2

Cracking (ACA) on Major Roads – 2007/08 0 – 1% (V Good) = 133 km 40% 1 – 5% (Good) = 98 km 30% 5 – 10% (Fair) = 42 km 13% 10 – 30% (Poor) = 50 km 15% Avg. Cracking measured in 2007 = 5.5% 30 – 100% (V Poor) = 5 km 2% Total = 328 km Avg. Cracking after 2008 Paving = 5.0%

Recommended Funding vs Actual (major roads)

Average Cracking in 2000 = 5.2%

Average Cracking in 2003 = 4.7%

Recommended Funding in 2003 = $2.4 million/year

Actual Funding 2003 thru 2007 = $1.9 million/year * (average)

Measured cracking percentage in 2007 = 5.5%

Cracking % After 2008 Paving Programme = 5.0%

* 31 km out of the total 328 km of Major roads were re-surfaced between the 2003 survey and the 2007 survey

Comparison to Other Agencies How does this compare to elsewhere in terms of Cracking ?? Using the same data collection / interpretation

British Columbia (major roads only) Km

Maple Ridge (2007) 8.8 % 154

Abbotsford (2003) 7.8 % 304

Coquitlam (2007) 5.7 % 119

Surrey (2007) 5.6 % 490

Township (2008) 5.0 % 328

Township (2003) 4.7 % 328

New Westminster (2006) 4.6 % 28

Richmond (2004) 3.7 % 98

Delta (2006) 2.4 % 113

Cracking (ACA) on MRN Roads 2005 0 – 1% (V Good) = 43 km 1 – 5% (Good) = 14 km 5 – 10% (Fair) = 2 km 10 – 30% (Poor) = 0 km Avg. Cracking = 1.0% 30 – 100% (V Poor) = 0 km

Cracking (ACA) on Local Roads - 2008 0 – 1% (V Good) = 156 km 1 – 5% (Good) = 125 km 5 – 10% (Fair) = 38 km 10 – 30% (Poor) = 72 km Avg. Cracking = 8.8% * 30 – 100% (V Poor) = 35 km Total = 426 km * Predicted condition in 2008 based on 2005/06 data

Analysis Inputs Example Pavement Strategies (combinations of treatments) 13 Years 10 Years 20 Years

Analysis Inputs Using Life Cycle Cost Analysis Evaluated Several Strategies for Each Pavement Segment

Strategy is comprised of combinations of individual treatments and treatment application timings

For a given pavement there are hundreds potential preservation strategies.

Analysis Results – Major Roads Deterioration 9% 16% 4% 6% 20% Cracking (ACA) % $2.0mill $3.0 mill $3.5 mill $4.0 mill $1.5 mill Recommended Recommended Actual Spending on annual maintenance for major roads is @ $250,000/ year Predicted

Analysis Results – Local Roads Deterioration 4% 11% 15% Cracking (ACA) % $3.0 mill $3.5 mill $4.0 mill $2.5 mill Recommended Recommended 7% Actual spending on annual maintenance for local roads is @ $250,000/ year versus required $500,000/ year shown Predicted

Cracking (ACA) on Major & Local Roads 2009 - 2025 Predicted condition in 2009 - 2025 Major: $2.0 million/ year Local: $2.0 million/ year Annual Spending: $4.0 million/ year

Cracking (ACA) on Major & Local Roads - 2009 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $4.0 million/ year *Avg. Cracking = Major 5.0 % = Local 8.8 % * Predicted condition in 2009

Cracking (ACA) on Major & Local Roads 2025 Predicted condition in 2025 Major & Local: $500,000/ year Annual Spending (Do Minimum) :

Cracking (ACA) on Major & Local Roads - 2025 0 – 1% (V Good) 1 – 5% (Good) 5 – 10% (Fair) 10 – 30% (Poor) 30 – 100% (V Poor) Annual Spending: $500,000/ year *Avg. Cracking = Major 26.3% = Local 30.2% * Predicted condition in 15 years

Pavement Asset Value Pavement Type Replacement 2008 Value 2018 Value (Recommended Budget) MRN Roads $ 74 million $ 66 million $ 66 million (at $1.3 million/ Year) Major Roads $151 million $136 million $133 million (at $4.0 million/ Year) Local Roads $110 million $ 85 million $ 85 million (at $4.0 million/ Year) $335 million $287 million $284 million

Recommended MRN Road Funding : 1.8% of Asset Value

Recommended Major Road Funding : 2.7% of Asset Value

Recommended Local Road Funding : 3.6% of Asset Value

Roads in good condition can be managed for between 2% and 2.5% of asset value

The local road funding could be reduced to $2.8 million/year once cracking is reduced to 4%

For Discussion

Calculating Pavement Value Pavement value = Cost of Excavation and Compaction + cost of Subbase + cost of Base + cost of Asphalt Original Ground Excavation and Compaction Subbase Base Asphalt

With time and traffic, pavement layers deteriorate Failure Rutting Cracking

Calculating current pavement asset value cracking Original Pavement value minus the cost in any given year to restore the pavement to as new condition New Asphalt

Pavement Asset Value