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Re:Is Your Job an Endangered Species? by almond on Thursday February 17, 2011 @12:42PM (#2231867)
We shouldn't wait until after a piece of infrastructure collapses to fix the cracks in the foundation. The public capital stock has been allowed to age much more than the residential and private stock:

http://www.economist.com/blogs/gulliver/2010/12/age_americas...

Re:Is Your Job an Endangered Species? by yummyfajitas on Thursday February 17, 2011 @01:28PM (#2232116)
Measuring age is not necessarily relevant - if a bridge has a lifetime of 50 years, but the average age is 23 years (up from 16), we have a long way to go before it becomes a problem. Your chart is interesting, but hardly conclusive.