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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.

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We are no-nonsense, relentless, fair, and honest. We are great listeners instead of fast talkers, that is just who we are. More than 20 years ago, Ken began practicing law with a deeply-seeded belief that every person has the right to the best legal representation available. He built his law firm on that belief. Another belief that he strongly adheres to is his fundamental belief that clients deserve respect, with no assumptions or preconceived notions.  If you or someone you know is accused of a crime or injured as a result of the negligence of another, please have them call us at 253-720-9304 or email us