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This is a list of countries (or regions) by total road network size, both paved and unpaved.Also included is additional data on road network density and the length of each country or region's controlled-access highway network (also known as a motorway, expressway, freeway, etc.), designed for high vehicular traffic.
This is far less highway and road distance than the United States, which is smaller, but has more than 6,000,000 km (3,700,000 mi) of paved roads and highways. However, Canada still has many more roads and highways than Russia, the largest country in the world in land area, with an estimated just 336,000 kilometres (208,000 miles) of paved roads.
A county highway (also county road or county route; usually abbreviated CH or CR) is a road in the United States and in the Canadian province of Ontario that is designated and/or maintained by the county highway department. Route numbering can be determined by each county alone, by mutual agreement among counties, or by a statewide pattern.
A road of such material is called a "metalled road" in Britain, a "paved road" in Canada and the US, or a "sealed road" in parts of Canada, Australia and New Zealand. [ 48 ] A granular surface can be used with a traffic volume where the annual average daily traffic is 1,200 vehicles per day or less.
The roadway network in Mexico is extensive and covers all areas of the country. [1] The roadway network in Mexico has an extent of 366,095 km (227,481 mi), [ 2 ] of which 116,802 km (72,577 mi) are paved, [ 3 ] making it the largest paved-roadway network in Latin America . [ 4 ]
A map of the United States' Interstate Highways as of 1 October 1970. Numbered highways in the United States; List of Interstate Highways; List of United States Numbered Highways; Further information: Interstate Highway System; United States Numbered Highway System; Historic trails and roads in the United States
The highway remained unchanged for several years afterward. In the 1976 renumbering of Nevada's state highways, SR 20 was altered. The paved portion of the road, from US 6 to Duckwater, was reassigned to State Route 379 on July 1, 1976; [ 8 ] this change was first seen on state maps in 1978. [ 9 ]
The final alignment of SR 23, shown as a paved highway, was in place by 1946. [5] The route remained relatively unchanged until the 1976 renumbering of Nevada's highway system. On July 1, the SR 23 designation was replaced by State Route 361. [6] This change was first seen on the 1978–79 edition of the official highway map. [7]