Why do highways deteriorate so fast?

Highways deteriorate quickly due to a combination of factors, including heavy traffic loads, environmental conditions, and material fatigue. The constant stress from vehicles, especially heavy trucks, can lead to surface cracking and structural damage. Additionally, temperature fluctuations cause expansion and contraction, which can exacerbate wear and tear. Poor drainage and water infiltration further accelerate the deterioration process by weakening the pavement and underlying materials.