Our highways do! Spring is the time of year when we place our highways on a weight restricted diets. Road weight restrictions protect our highways from heavy loads during this time of year when they are at their weakest. Why are they so weak right now? As temperatures rise, the pavements start to thaw out from their frozen winter condition. Unfortunately, the roadways may have frozen several feet thick and while the tops may be thawing out, the lower portions are still frozen. This creates a condition where melting ice and snow seeps into the cracks of pavements and gets trapped inside. This makes the pavements weak and "mushy". And if temperatures get below freezing at nighttime, this water refreezes and causes additional stress on the pavements. You can learn more about this condition on the "Links" section of this website from the "Anatomy of a Pothole" link. Enjoy!
The Highway Doctor is the alter-ego of Doug Fischer, a civil engineer who has been in the transportation industry for over 25 years. See more info in the "Contacts/About" page.