Description
This Alberta Official Statistic describes the physical condition of Alberta’s highways. The International Roughness Index (IRI) is used to measure the roughness of roads and is used as a sole measurement to categorize overall physical condition. The average IRI value is calculated over every 50 metre segment of the Alberta highway network. This detailed data is further averaged over one kilometre sections to provide an assessment of condition. This information is used to assess and sustain the quality of the paved highway network, in support of efficient movement of commuter, business, commercial, and pleasure traffic. The preservation of pavement quality through regular rehabilitation reduces the total life cycle cost of the highway system, improving return on investment for Albertans.
Updated
June 29, 2018
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Title and Dataset Information
Date Modified
2018-06-29
Update Frequency
Annual
Publisher / Creator Information
Creator
Publisher
Transportation
Subject Information
Resource Dates
Date Created
2015-05-13
Date Added to catalogue
2015-05-13T19:26:15.129312
Date Issued
2013-05-28
Date Modified
2018-06-29
Audience information
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Usage / Licence
Usage Considerations
The International Roughness Index (IRI) is used to measure the roughness of roads and is used as a sole measurement to categorize overall physical condition of provincial highways. The identification of highways as good, fair or poor relies on criteria established as a result of a comprehensive research study conducted on the government’s behalf by the University of Calgary in 2002 of road conditions and other performance measures. The values are categorized by highway classification and are compiled into one-kilometre segments. The source IRI data was collected and processed by external consultants. Data received was reviewed and used by Alberta Transportation staff in the performance measure analysis.
After existing good, fair, poor segments are identified, anticipated work activities and pavement deterioration rates are used to determine future performance targets.
Contact
Contact Name
Office of Statistics and Information
Contact Email
Contact Other
(780) 427-2071