We hear some West Seattleites got stuck in this backup earlier tonight: At one point, three lanes of southbound I-5 were closed just before the West Seattle Bridge exit because of what WSDOT’s alert called “a police investigation.” According to KING5‘s 11 pm newscast (though we’re not finding this replicated online yet), someone standing or walking on the freeway was hit and killed. In e-mail asking about the incident, after spending time in the resulting backup, Tracie wrote, “We saw a pair of tennis shoes on the pavement with a spray-painted circle around them, and a forensic unit on site.” WSDOT just sent an update saying all lanes are open again. 2:33 AM UPDATE: Washington State Patrol has sent the incident report to media; two cars hit the 44-year-old Shoreline man who was killed (his relatives have not yet been notified so his name isn’t to be made public at this point) who was “walking (on) southbound I-5 just north of 6th and Forest … attempted to cross south lanes of travel … struck by (both) vehicles.” No word so far why he was walking on the freeway.