Key Points
- A motorcyclist suffered serious injuries in a Hit-and-run crash on southbound I-405 near Sunset Boulevard in Renton, Washington.
- The incident occurred Wednesday morning, prompting a temporary highway closure for investigation as a felony vehicular assault.
- The car driver fled the scene immediately after the collision.
- Lanes reopened around 7:30 a.m., but the closure caused significant traffic delays in the Renton area.
- Authorities from the Washington State Patrol are searching for the fleeing driver and vehicle description.
- Drivers were advised to use alternate routes during the investigation.
Renton,(King County Insider) – May 13, 2026
A motorcyclist sustained serious injuries in a hit-and-run crash on southbound Interstate 405 near Sunset Boulevard, leading to a brief highway closure treated as a felony vehicular assault investigation.
The Washington State Department of Transportation reported the incident at approximately 5:15 a.m., with two of three lanes blocked initially. As reported by KOMO News staff, Washington State Patrol Trooper Rick Johnson described the collision between a car and a motorcycle as a serious injury hit-and-run, under investigation for vehicular assault. Johnson noted efforts to obtain a description of the fleeing vehicle.
Why Was Southbound I-405 Closed in Renton?
The closure stemmed from the need to secure the scene for a felony-level probe into the hit-and-run. FOX 13 Seattle coverage stated that the highway shut down near the Sunset Boulevard exit while investigators examined the incident.[ from query context] Lanes fully reopened by 7:30 a.m., according to investigators cited in multiple outlets.
Trooper Johnson, speaking to KOMO News, confirmed the motorcyclist’s serious injuries from the collision. The car driver left the area right after impact, leaving the motorcycle rider requiring medical attention.
What Caused the Crash on I-405 Near Sunset Boulevard?
Details on the exact cause remain under review by the Washington State Patrol. KIRO 7 News reported at least one person injured in the car-motorcycle hit-and-run on I-405 in Renton that morning. Trooper Johnson, quoted in KOMO coverage, emphasized the vehicular assault classification due to the severity and flight from the scene.
No vehicle description has been released publicly. The highway blockage near Sunset Boulevard exit created heavy congestion, with drivers urged to seek detours.
What Do Authorities Know About the Hit-and-Run Suspect?
Investigators have not disclosed a suspect vehicle description as of latest updates. As per KOMO News, Trooper Johnson was working to gather that information during the probe. FOX 13 Seattle noted the driver fled immediately post-crash, classifying it as a felony assault.
The Washington State Patrol is leading the search for the driver. Witnesses have not been publicly identified in reports.
How Did the Closure Affect Renton Traffic?
The blockage caused major delays for commuters on I-405 through Renton. WSDOT alerts highlighted backups from the Sunset Boulevard area. Travelers were directed to alternate routes to bypass the investigation site and congestion.
Reopening at 7:30 a.m. eased flow, but early morning rush hour amplified impacts. KOMO News described long backups from the two-lane block.
What Is the Status of the Injured Motorcyclist?
The motorcyclist suffered serious injuries, per Washington State Patrol statements. No further condition updates or identity released. Medical transport details unavailable in initial reports.
KIRO 7 confirmed at least one injury from the incident.
Who Is Investigating the I-405 Renton Crash?
The Washington State Patrol holds primary jurisdiction, sourcing all initial information. Trooper Rick Johnson provided key details to media. No other agencies mentioned in coverage.
This remains a developing story, with calls for updates ongoing.
The incident underscores routine traffic enforcement challenges on busy I-405 stretches near Renton. Coverage from FOX 13 Seattle, KOMO News, and KIRO 7 aligns on core facts without contradiction.
Background of the Development
Southbound I-405 near Sunset Boulevard in Renton sees heavy daily commuter Traffic linking Seattle suburbs to major routes. Hit-and-run incidents on this corridor occur periodically, often investigated as vehicular assaults when injuries result. Washington State Patrol handles such cases statewide, with Renton-area crashes frequently causing closures due to high volumes. Prior similar events, like motorcycle collisions nearby, have led to witness appeals and suspect searches.
Prediction for Renton Commuters and I-405 Travelers
This development can extend commute times if suspect vehicle leads prompt further lane blocks for evidence collection. Renton-area drivers and southbound I-405 users may face ongoing alerts or detours during peak hours pending suspect apprehension. Increased patrols could heighten enforcement but add minor delays for routine traffic. Commuters reliant on this route should monitor WSDOT updates to adjust plans.
