A new road construction can last how many years

The lifespan of a new road construction can vary greatly depending on several factors, including:

1. Material quality: The type and quality of materials used in the construction, such as asphalt, concrete, or aggregate, can affect the road's durability.
2. Design and engineering: A well-designed road with proper drainage, slope, and camber can last longer than one with inadequate design.
3. Traffic volume and intensity: Roads with high traffic volumes and heavy loads may require more frequent maintenance and have a shorter lifespan.
4. Environmental conditions: Exposure to extreme temperatures, weather conditions, and natural disasters can impact the road's longevity.
5. Maintenance and upkeep: Regular maintenance, such as resurfacing, repairing, and cleaning, can extend the road's lifespan.

On average, a new road construction can last:

• 20-30 years: Asphalt roads, which are commonly used for low-to-moderate traffic roads, can last around 20-30 years with proper maintenance.
• 30-50 years: Concrete roads, which are often used for high-traffic roads, can last around 30-50 years with proper maintenance.
• 50-100 years: High-quality concrete roads, such as those used for highways, can last 50-100 years or more with minimal maintenance.

However, these estimates can vary significantly depending on the specific conditions and factors mentioned above. Some roads may need to be replaced or rehabilitated sooner, while others may remain in good condition for many decades.

It's also important to note that road maintenance is an ongoing process, and regular upkeep is necessary to extend the road's lifespan and ensure safety.