Final answer:
In the United States, approximately 99% of the road infrastructure is composed of paved roads.
Step-by-step explanation:
In the United States, paved roads represent approximately 99% of the road infrastructure. Road infrastructure in the United States is extensive and plays a crucial role in facilitating transportation, commerce, and daily life. The road network includes various types of roads, highways, bridges, tunnels, and interchanges that connect cities, states, and regions across the country.