Agencies have been using salt brines and a variety of other liquid concoctions for years as a winter maintenance strategy. Pre-wetting stockpiles, pre-wetting at the spinner, slurries, direct application for anti-icing have been tried and true practices. Now some have taken the use of liquids to the max, and now, utilizing direct liquid applications through the course of the storm. Some would say using liquid only routes are a risky proposition throughout the storm although some states and countries abroad have been successfully running field trials with liquid only routes.
Jim Hughes, State Maintenance Engineer with the Wisconsin DOT is talking winter ops with SICOP about their experience with liquid only routes.
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