Firefighters with Eastside Fire & Rescue responded to an RV fire along westbound Interstate 90 Monday evening.
At about 8:24 p.m., firefighters posted a photo of the flames and said both directions of I-90 were closed as crews maintained a safe distance as ammunition inside the RV was exploding.
The RV was on fire near milepost 42, east of North Bend.
By 8:47 a.m., crews moved in to finish extinguishing the fire.
Drivers were asked to avoid the area.