A tragic single-vehicle motorcycle crash on southbound Interstate-5 near the Marquam Bridge in Portland resulted in the death of the rider on the evening of June 19, 2026. The incident prompted a full closure of southbound I-5 as investigators worked to determine the circumstances surrounding the fatal collision.
According to the Portland Police Bureau, officers assigned to North Precinct responded at approximately 6:18 p.m. to reports of a crash near Exit 299A toward Lake Oswego, just south of the Marquam Bridge. Upon arrival, responders located a motorcycle that had been involved in a serious crash. Emergency Medical Services also arrived at the scene, and paramedics confirmed that the rider had died as a result of the collision.
Preliminary findings indicate that no other vehicles were involved in the incident, though the exact cause of the crash remains under active investigation. Authorities have not yet released the identity of the deceased rider, pending notification of next of kin.
The Portland Police Traffic Division Major Crash Team has taken over the investigation and is working to reconstruct the events leading up to the crash. During the investigation, all southbound lanes of I-5 in the area were closed, causing significant traffic disruptions. Motorists were diverted from the Marquam Bridge onto northbound I-405, with officials advising drivers to use I-205 as an alternate route when possible. The Oregon Department of Transportation assisted police with traffic management and road closures.
Officials are asking anyone who may have witnessed the crash or has relevant information to come forward and contact investigators through the Portland Police Bureau’s online reporting system, referencing case number 26-178327.
Authorities noted that this incident marks the 20th traffic-related fatality in Portland this year and the eighth involving a motorcycle or similar vehicle, underscoring ongoing concerns about roadway safety.
Further details will be released as the investigation continues and next of kin are notified.
Disclaimer: This report is based on preliminary information released by law enforcement and may be updated as additional verified details become available.
