What is a primary consideration when selecting materials for highway construction?

When selecting materials for highway construction, durability and performance under load are critical considerations because highways must withstand various stresses and environmental conditions over their lifespan. The materials chosen need to have the strength to support heavy traffic loads, resist deformation, and maintain their structural integrity over time. This includes factors such as resistance to weathering, freeze-thaw cycles, and wear from vehicle traffic.

While cost, aesthetic appeal, and availability are also important considerations in the overall decision-making process, they do not directly impact the essential functionality and long-term performance of the highway structure. Therefore, prioritizing durability and performance ensures that the highway remains safe and serviceable, reducing the need for premature repairs or reconstruction. This focus on fundamental engineering properties reflects best practices in highway construction and contributes to the sustainability and safety of the infrastructure.