Interstate 90 was closed in both directions in western Spokane County on Tuesday night after a semitruck crashed and spilled a chemical called ammonium nitrate. The crash occurred at around 8:40 p.m. near the Tyler interchange.
The semitruck was carrying ammonium nitrate, a fertilizer that can be explosive. The crash caused the truck to leak ammonium nitrate, and officials closed the freeway in both directions as a precaution.
No one was injured in the crash, but the chemical spill forced the evacuation of a one-mile radius around the crash site. The evacuation order was lifted around midnight, but I-90 remained closed until Wednesday afternoon.
The Department of Ecology hired Graymar Environmental to clean up the site of the spill. Crews used an excavator to remove contaminated dirt from the scene. The cleanup was completed on Wednesday afternoon, and I-90 was reopened to traffic.
This is the second time in recent months that a chemical spill has closed I-90 in western Spokane County. In May, a tanker truck carrying ethanol crashed and spilled the fuel on the freeway. The spill caused the freeway to be closed for several hours.
https://www.spokesman.com/stories/2023/aug/09/i-90-closed-in-western-spokane-county-due-to-chemi/
Additional Resources
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