Gravel roads: Maintenance and Design Manual
On September - 27 - 2009
Gravel roads: Maintenance and Design Manual
There are over 1.6 million miles of unpaved roads (53% of all roads) in the United States.In some nations, the road network is predominantly unpaved and generally consists of gravel roads. This manual was developed with a major emphasis on the maintenance of gravel roads, including some basic design elements.
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