Insurance Co's, CAA and Scotia Glass in Atlantic Canada are cautioning the public about Spring potholes- http://bit.ly/hHCQE9

Insurance Co's, CAA and Scotia Glass in Atlantic Canada are cautioning the public about Spring potholes- http://bit.ly/hHCQE9

DAILY NEWS Mar 29, 2011 4:45 PM
Spring has arrived - and so have potholes


State Farm in Canada, CAA-Quebec and glass dealers in Atlantic Canada are cautioning the public about one of the traditional rites of Spring — potholes.
Most roadways are built in layers, starting with earth and gravel for drainage and then covered with a layer of asphalt.
Cracks in the asphalt layer cause water to seep into the lower layers, where the water freezes and expands. Some of the underlying dirt and gravel is displaced as a result of the water freezing, leaving a hole when the water eventually melts.
When the asphalt layer over top of these holes collapses, the result is a pothole.

Story continued in link - http://bit.ly/hHCQE9