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Roads,
Skid Trails, Landings, and Stream Crossings |
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Drainage |
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The most critical problem regarding road construction
and maintenance is drainage of the surface water from the road surface.
Traffic causes ruts when standing water is present. Running water erodes
the surface of the road or embankments and deposits the sediment in streams
and lakes. Design roads to address these important issues.
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Solutions |
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Outsloped roads are less-expensive to construct
and maintain. They should be used on moderate slopes with stable soils. |
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Insloped roads with ditches are used on steep
terrain, side slopes or when runoff can be diverted away from road fills.
This may reduce erosion of the fill and prevent sedimentation. |
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Crowned roads are elevated roadbeds that drain
to each side and are used in situations such as poorly-drained soils or
for a more permanent road subjected to heavier loads.
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