Structural snow fencing
is best suited for sites that are not conducive for tree and shrub
plantings. The following factors may preclude the use of living
snow fences:
- Herbicide concerns
- Unavoidable tile lines
- Soil pH above 8.0
- Soil salinity and/or salt spray
- Soil types that are too compacted, wet, dry, and or rocky to
permit normal root development
- Presence of deer wintering area that raises the threat that
a living snow fence will be browsed to the point that the fences
does not reach the required height.
Structural snow fencing uses a synthetic rail and wood or steel
posts to create the fence. A polyethylene material
with bonded cables inside to create the synthetic rail. Posts
are spaced according to the height of the fences, but are typically
10-15 feet apart. No additional clearance is needed on the sides
of the fence. Due to the material costs, labor associated with
constructing this type of snow fence, and that they are left standing
year-round, Mn/DOT typically acquires an easement or enters into
an agreement with the landowner.
Photos
of Structural Snow Fence stopping blowing and drifting snow after
March 2007 storm.
Structural snow fence protecting US Highway 14 near Cobden, MN.
Manufacturers
of rails as of July 2006:
Centaur Snow Rail
Perma-Rail International Inc.
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