VDOT To Apply Dust Control on Unpaved Roads in Clarke

The Virginia Department of Transportation (VDOT) will be applying calcium chloride for dust control on various non-hardsurface roads in Shenandoah, Frederick, Clarke, and Warren Counties beginning Monday, July 19, 2010 at 7:00 a.m.

According to the United States Department of Agriculture Forest Service, calcium chloride is an effective means of reducing dust and fine debris from being distributed by traffic on roads. Calcium chloride retains moisture for extended periods of time thereby significantly reduce road dust. This unique property of this common salt helps stabilize unpaved road surfaces and is an environmentally friendly solution for dust control.

VDOT estimates the completion date for the treatment will be early August 2010, weather permitting. The work will be performed by Calcium Chloride Sales.


  1. Charles Vandervoort says:

    I wonder if the Calcium Chloride will damage our gravel roads by creating soft muddy sections during rain? There is lots of belief that Sodium Chloride (rock salt) damages gravel roads. Rock salt is used in the winter to prevent black ice from forming. Isn’t Calcium Chloride even worse than Sodium Chloride. For this reason VDOT policy is not to salt gravel roads during the winter. They use sand.

    Would be interesting to hear how VDOT answers this question.

    • J.C.Coon says:

      Hubby says that they use salt on hard surface as a melting agent because the asphalt pavement absorbs heat from sun and tires to create a little melt Thus allowing them space between road and ice to plow.  On a dirt road you do not get a flat surface to give you a melt. The chemistry does not work on dirt road. So there is no advantage to salting a dirt road.  Salt in the summer works in the summer because salt draws moisture from the air hence making the dirt road damp. Hence no dust.  Think about what happens to your salt shaker in the humid summer. It gets all caked up because it’s drawing moisture from the air.  Old wives tale. Add a few grains of rice to your salt shaker to draw out moisture.

  2. Calcium Chloride is not salt. “Sodium” is salt

    • Calcium Chloride is an anhydrous salt. It is not table salt, like Sodium Chloride, but it is never the less, a salt.

  3. Charles Vandervoort says:

    Does anyone have the phone number or email of the company applying the Calcium Chloride? The press release gives the name only as “Calcium Chloride Sales.”

    Also, does anyone know if the work was done. I checked with VDOT but nobody had an answer. Sounds like the press release may have been premature.

    Charles Vandervoort