One westbound lane of Interstate 90 near Snoqualmie Pass is left open after an RV fire forced lane closures Monday night. Both directions were closed for about 30 minutes. The eastbound lanes reopened shortly before 9 p.m. Crews had to maintain distance from the fire because of exploding ammunition, according to Eastside Fire & Rescue. Once it was safe to move in, they began extinguishing the flames. The fire was extinguished just after 10 p.m. No injuries have been reported, according to Eastside Fire & Rescue. The cause of the fire is unknown.