A dirt road or track is a type of unpaved road not paved with asphalt, concrete, brick, or stone; made from the native material of the land surface through which it passes, known to highway engineers as subgrade material.
7-715: Former State Route 49 , also known as Jungo Road , is an unimproved road in Northern Nevada from County Route 447 (former State Route 34 ) near Gerlach east to Winnemucca via the ghost towns of Sulphur and Jungo . It crosses the Kamma Mountains northeast of Sulphur. Most of the route runs parallel to the Feather River Route , a rail line originally built by the Western Pacific Railroad . In addition to an access for
14-564: A gravel road, a dirt road is not usually graded regularly to produce an enhanced camber to encourage rainwater to drain off the road, and drainage ditches at the sides may be absent. They are unlikely to have embankments through low-lying areas. This leads to greater waterlogging and erosion, and after heavy rain the road may be impassable even to off-road vehicles . For this reason, in some countries, such as Australia and New Zealand and Finland , they are known as dry-weather roads . Dirt roads take on different characteristics according to
21-545: A washboard-like surface with ridges. The reason for this is that dirt roads have tiny irregularities; a wheel hitting a bump pushes it forward, making it bigger, while a wheel pushing over a bump pushes dirt into the next bump. However, the surface can remain flat for velocities less than 5 mph (8 km/h). While most gravel roads are all-weather roads and can be used by ordinary cars , dirt roads may only be passable by trucks or four-wheel drive vehicles , especially in wet weather, or on rocky or very sandy sections. It
28-432: Is not well-defined. Laterite and murram roads , depending on material used, may be dirt roads or improved roads. Unpaved roads with a harder surface made by the addition of material such as gravel and aggregate (stones), might be referred to as dirt roads in common usage but are distinguished as improved roads by highway engineers. Improved unpaved roads include gravel roads and macadamized roads . Compared to
35-505: The soils and geology where they pass, and may be sandy, stony, rocky or have a bare earth surface, which could be extremely muddy and slippery when wet, and baked hard when dry. They are likely to become impassable after rain. They are common in rural areas of many countries, often very narrow and infrequently used, and are also found in metropolitan areas of many developing countries, where they may also be used as major highways and have considerable width. Dirt roads almost always form
42-621: The ghost towns, the road also is an access for the Black Rock Desert from the East. Although still commonly referred to as State Route 49, the dirt road is not maintained by the Nevada Department of Transportation . It was eliminated as a state route as part of a Nevada state route renumbering project that began in 1976. The highway last appeared as a state route in the 1980 edition of the official Nevada Highway Map. Today,
49-570: The portion of the road within Humboldt County is designated County Route 55. This Nevada road-related article is a stub . You can help Misplaced Pages by expanding it . Unimproved road Terms similar to dirt road are dry-weather road , earth road , or the "Class Four Highway" designation used in China . A track , dirt track , or earth track would normally be similar but less suitable for larger vehicles—the distinction
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