I received an interesting article from Roads & Bridges magazine. As you all know asphaltic concrete (A.C.) is temperature sensitive. A group of researchers in AZ did a study on the impact of rising global temperature, and came to the conclusion that the current A.C. in use was designed to tolerate temperature extremes of a period that ended in 1995.
Here is a summary of the study.
https://arstechnica.com/science/2017...turys-climate/
Here is the full study. Unfortunately you have to buy or rent the study, or subscribe to the magazine.
http://www.nature.com/nclimate/journ...ck=true#access
So far the study estimates that the mismatch between the roads and temperatures already added up between 13 - 14 billion in repair/maintenance/replacement cost as of 2010. States like CA and TX which have the most roadways see the largest total cost. However, on a per kilometer basis, the midwest states experience the largest number of problems.