The injury attorneys with Althauser Rayan Abbarno get a lot of questions why the roads in Washington are extra slippery in winter months … aside from just the rain! Here are some reason:
🌧️ 1. Oil and grime build up during dry weather
When it hasn’t rained for a while, oil, grease, and dirt from cars build up on the road surface.
The first rainfall lifts these oils, creating a thin, slick layer — almost like driving on ice.
That’s why accidents often spike during the first hour of rain after a dry period.
đźš— 2. Road materials and wear
Many Washington roads use asphalt, which contains oil-based materials. Over time, heat and wear cause small amounts of oil to seep to the surface.
When it rains, that oil mixes with water and creates a slippery film.
❄️ 3. Moss and algae growth
Because Washington has a damp climate, moss, algae, and mildew grow on shaded or low-traffic areas of pavement.
When wet, those patches become extremely slick — especially on rural highways or side roads near trees.
🧊 4. Temperature and traction
In cooler months, road temperatures drop quickly when rain hits. That can cause condensation or thin ice layers, particularly on bridges and overpasses.
Even if it’s above freezing, traction is still reduced when cold water and rubber tires meet.
⚠️ 5. Hydroplaning risk
Washington’s heavy rainfall can overwhelm drainage systems. Standing water on the road increases the risk of hydroplaning, when tires lose contact with the road surface completely.
âś… How to Stay Safe
- Drive slower during the first 15–30 minutes of rain.
- Avoid sudden braking or sharp turns.
- Check your tire tread and pressure regularly.
- Be extra cautious on bridges, curves, and shaded roads.
Car Accident?
If you or a loved one has been in a car accident, be sure to call Althauser Rayan Abbarno for a free injury consultation with our experienced personal injury attorneys. Call (360) 736-1301 to speak with an attorney today.
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