An early-morning motorcycle crash on southbound I-405 near Sunset Boulevard in Renton is being investigated as a vehicular assault hit-and-run, turning an already tough commute into a slog for drivers stuck in backups.
According to KING 5, the collision happened just before 5:15 a.m. on May 13 and initially shut down two of the three southbound lanes. Investigators told KING 5 they are working to pin down a description of the vehicle that took off after the crash and have not released further details about the motorcyclist or the suspected driver.
Traffic and delays
Per WSDOT, traffic stacked up for more than two miles on southbound I-405 as crews worked the scene, and drivers were warned to brace for serious delays and consider alternate routes. Two of the three southbound lanes stayed blocked for much of the morning while incident response teams and investigators documented the crash and cleared debris.
Investigation ongoing
Renton and state investigators are treating the wreck as a hit-and-run that could bring criminal charges, and they are asking anyone with video or information to contact authorities. As reported by KING 5, officials have not released additional identifying details about the vehicle that fled.
Legal implications
Because the crash is being investigated as vehicular assault, the driver believed to have caused it could face a felony under Washington law. Vehicular assault is a class B felony, according to RCW 46.61.522. State law also requires drivers involved in injury crashes to stop and provide aid, and leaving the scene can bring felony or gross misdemeanor penalties, depending on the severity of the injuries, under RCW 46.52.020.
Why this snarled the commute
Southbound I-405 through Renton is a well-known chokepoint, and ongoing widening and toll-lane work leave little room to spare when something goes wrong. WSDOT's Renton-to-Bellevue program notes multiple construction windows and weekend closures that can turn a single early-morning crash into a region-wide headache. The agency says routine congestion and construction can amplify the ripple effects of incidents like this one. More detail is available in the program overview from WSDOT.
