The Essential Role of Snow Fences Along Highways
Many might confuse the tall slatted walls spotted alongside snowy highways for mere property fences. However, these structures serve a vital purpose—they are snow fences designed to prevent blowing snow from reaching the roads. According to the Federal Highway Administration (FHWA), managing snow through fencing can drastically cut costs, as plowing snow can be 100 times more expensive than trapping it with a fence.
Understanding Snow Dynamics
A common misconception is that snow simply falls. In reality, wind plays a significant role, moving snow across the landscape. Snow grains, often too heavy to remain airborne, either bounce along the surface or roll, creating substantial problems when they drift onto roadways. The FHWA notes that it can take considerable time for crews to clear these snow drifts, complicating travel and increasing the likelihood of accidents.
How Snow Fences Work
Unlike solid walls that block snow, snow fences primarily slow down the wind's force. As the wind's speed decreases, the pressure on the snow grains reduces, leading to accumulation downwind of the fence. This design creates a more manageable drift zone, thus redirecting the snow from roads. Effective fencing typically features an open space that ranges between 40-50%, as confirmed by Ronald D. Tabler’s guide on snow fences. In addition, allowing for a lower gap of about 10 to 12 percent of the fence's overall height enhances effectiveness on flat terrain.
The Impact of Height and Placement
The height of the snow fence is a critical factor in its effectiveness: a taller fence can store significantly more snow. For example, an 8-foot fence can hold 4.6 times more snow than a 4-foot fence. The placement of these fences is also crucial; they must be positioned at least 35 times their height away from the road to maximize efficiency. This means an 8-foot fence needs to be set back at least 280 feet, which often presents challenges regarding land agreements and rights-of-way.
Assessing Cost-Efficiency
The FHWA emphasizes that utilizing snow fences is cost-effective when compared to snow removal efforts. For instance, data from Wyoming cites that snow fence maintenance costs only 3 cents per ton over 25 years. By contrast, moving snow can add up to $3 per ton, highlighting an advantageous solution for winter road safety. Furthermore, observational data from the 1970s showed a one-third reduction in snow and ice removal costs on stretches of Interstate 80 following snow fence installations, alongside a remarkable 70% decrease in visibility-related accidents.
Innovative Living Snow Fences
Not all snow fences are constructed from wood or plastic; some states, such as Minnesota, have adopted a 'living snow fence' approach. This involves engaging farmers to use natural barriers—like standing corn rows or bales—alongside highways. This innovative approach not only helps in snow management but also lends itself to sustainability. However, the establishment of these natural barriers requires time, as it typically takes a few years for the vegetation to grow to a height useful for snow trapping.
Conclusion: The Practical Implications for Residents
Next time you pass one of these tall fences, remember that they are not merely boundary markers or property separators but essential tools for managing winter weather. With the looming prospect of snowstorms each year, understanding the benefits and functionalities of snow fences can aid residents and businesses in preparing for winter. Not only do they represent an investment in road safety, but they also link to broader considerations regarding efficient and sustainable snow management, particularly pertinent for businesses relying on dependable access routes during inclement weather.
Looking for effective snow removal solutions in Muskegon? Understanding these preventative measures can prepare you better for the upcoming winter season. Consider exploring local snow removal services to ensure your driveway and business are well-maintained despite the elements!
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