Highways and roads were the largest component of public infrastructure assets in Alberta, accounting for 62% of the total. The average age of roads in the province reached an all time peak of 15.5 years by the turn of the millennium but has since dropped to 14.4 years in 2007. This reflects the impact of higher investments.
In terms of percentage of estimated useful life, Alberta roads have tended to be considerably under the national average since 1982, but the gap in favour of the province has narrowed in recent years. In 2007, the rates were 51% of useful life expended in Alberta compared to 53% nationally.