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ROADS INFRASTRUCTURE RENEWAL IN THE CITY OF
CALGARY
The Western Canada Pavement Workshop2011 Edition
Calgary
Ryan Jestin, P.EngFebruary 1, 2011
Outline
Pavement/Road Inventory/History
Pavement Management System
–Network Level
–Project Level
Innovation
Summary
Questions
Pavement Inventory
The City of Calgary began tracking its paved road inventory over 100 years ago
We currently have:
–4,600+ centreline kilometres of paved roads
–14,600+ lane-kilometres of paved roads
Some Roads are Past Service Life
Road Repairs
We Apply
The right treatment
For the right road
At the right time
How Do We Achieve This?
Pavement Management System (PMS)
Pavement Management System
According to the TAC Pavement Design and
Management Guide, the purpose of a Pavement
Management System is to:
Achieve the best value possible for the available public funds and to provide safe, comfortable and economic transportation.
The City of Calgary adopted a pavement management system called the Municipal Pavement Management Application (MPMA) in 1980’s
Pavement Management System
Pavement Management SystemD
ata
base
Main
ten
an
ce
Seasonal Pavement
Attribute Data
Rehabilitation and Budget Optimization
Analysis
Budget andEconomic Data
Periodic Review/Update of Performance &
Analysis Models and Parameters
New/UpdatedStreet Sections
Develop Rehabilitation Program
Need Year Analysis
Performance Predication
Analysis
Update Database
Present Status Analysis
MPMA Pavement Database
Construction
New/UpdatedData
Reh
ab
ilit
ati
on
P
ro
gram
Field Survey Data
Sample output from the MPMA – Performance Index
Pavement Management System
GOODFAIRPOORFAIL
Performance Index
VERY GOOD
0.1 – 2.0 2.1 – 4.0 4.1 – 6.0 6.1 – 8.0 8.1 – 10.0
0.7%
7.1%
33.6%
41.5%
16.0%
0
400
800
1200
1600
2000
Km
Pavement Quality Index (PQI)
Sample output from the MPMA– Roads below the trigger
PQI values
Pavement Management SystemN
Pavement Management System
Sample output from the MPMA –Annual Budget
Optimization
$30M /yr spent $40M/yr spent$20M/yr spent$0M /yr spent
Network Condition Over Time
% U
naccep
tab
le C
on
dit
ion
Time
Project Level Pavement Management
Tier 1: No structural damage - crack sealing, micro surfacing or mill & fill will preserve the pavement
Tier 2: Moderate surface and structural damage - localized base repair and surface overlay are required
Tier 3: Significant surface and structural damage – pavement structure reconstruction and full investigation through a consultant are required
Pavement Management System
Pavement Life Cycle
Life Cycle Cost Analysis (LCCA)
Maximum Potential Life
Conditio
n
Minimum Acceptable
Effective Physical Life
Time
Refu
rb
ish
Refu
rb
ish
Refu
rb
ish
Rep
lace
Effective Economic Life
Pavement Life Cycle
Sustainable Practice Triple Bottom-Line
Innovation
The City of Calgary strives to be a leader in innovation
Innovation – Warm Mix Asphalt
Calgary was the first city in Canada to use Warm
Mix Asphalt
Innovation – Asphalt Rubber
Innovation – Rubber Sidewalk
Innovation – Stone Matrix Asphalt
Innovation – Superpave Asphalt
Superpave Asphalt has been used on Calgary’sArterial Roads for 15 years
Innovation – Concrete Overlay and
DuraTough
Innovation – Paving Stone Pavement
Innovation – Porous Pavement
Innovation – Gravel Road Stabilization
Innovation – Pavement Smoothness
Specifications & PG Binder Specifications
Calgary is:
The first Canadian municipality to implement pavement smoothness specifications
One of the first Canadian municipalities to implement Performance Graded Asphalt (PG) binder specifications
Innovation
Other examples of roadway innovation employed at The City of Calgary include:
Full Depth Reclamation along Highway 22x in 2006
Cold In-place Recycling – 2011 (144 Avenue NW)
Challenges & Opportunities
Paving Stone Pavement (Opportunity with new development)
Sink Hole from Water Main Break(Challenge from an unexpected situation)
Summary
The City of Calgary:
Maintains 14,600+ lane-kilometres of roads
Manages the pavement asset through MPMA
Evaluates different road repair alternatives
through LCCA
Renews road infrastructure using innovative
solutions that address the challenges and
opportunities we face
CITY OF CALGARY HAS
14,000 Centreline Kilometres
46,000 Lane-Kilometres
of roads
Adding new roads each year
The history goes back to more than 100 years
Questions