According to the provided information, the country with the most extensive road infrastructure, referred to as the biggest road network, is the United States.
The United States Road Network
The United States boasts the biggest road network in the world. While the question specifically asks about "highway," the available reference indicates that the US holds the top position for overall road network size, which encompasses all types of roads, including highways.
Key details about the U.S. road network from the reference:
- Total Length: The U.S. road network spans 6,803,479 km.
- Pavement Status:
- Paved: 63% of the network is paved.
- Unpaved: 37% of the network is unpaved.
- Historical Context: The expansion of the U.S. road network, particularly its highways, received a significant boost following the passage of the Federal-Aid Highway Act in 1956. This act was instrumental in developing the interstate highway system, a major component of the national road network.
The immense size of this network underscores the extensive infrastructure present in the United States, which includes a vast system of highways connecting cities and regions across the country.
While the specific length of only highways is not detailed in the reference, having the largest overall road network strongly positions the United States as the country with the most significant highway mileage as well, as highways constitute a critical part of this expansive system.
