What causes a road to break down?

There are many factors that lead to the deterioration of a road. Sunlight (UV Rays) break down the asphalt. Freeze/thaw cycles cause the asphalt to shrink and expand leading to cracks. Frost's action heaves the roads. Traffic loading obviously affects the life of the pavement. Probably the worst enemy that a road can have is water. Getting water away from the roadbed is critical.

The other factor, particularly in New England is many of our roads were never properly constructed. They started as wagon roads in colonial times to get produce to the market. Over time they were widened and upgraded, however, never properly designed for today's traffic loads. There is a great video of the Life Cycle of a Highway that demonstrates this phenomenon.

Show All Answers

1. Why do we have a road plan?
2. How many roads does the Town maintain?
3. How are roads prioritized?
4. What is the road plan budget based on?
5. What causes a road to break down?
6. Why are you paving that perfectly good road when my road is still terrible?
7. What is the process of road reclamation?
8. I thought this was a road plan why is so much work done on drainage?
9. Is there a list available to see what year my road is scheduled for repaving?
10. Does the state maintain any roads in Goffstown?
11. How do the State Classifications IV, V and VI impact maintenance actions?
12. Does the town have any gravel roads?