A 34 year-old man has died following a collision just after 11pm Sunday night in the 500 block of the Alaskan Way South.
Seattle Police dispatchers started receiving 911 calls around 11:15 pm of a motorcyclist down in the north bound lanes of the roadway. Officers arrived a few minutes later, located the man and immediately began CPR before the Seattle Fire Department arrived.
Seattle Fire arrived and took over life saving measures, before declaring the man dead at the scene. The Seattle Police departments Traffic Collision Investigation Squad responded to the scene to conduct a thorough investigation of the incident. The King County Medical Examiner responded and will work with the Traffic Collision Investigation Squad with the investigation.
The north bound lanes of the Alaskan Way viaduct were closed for several hours while the collision was investigated.
There is no evidence that another vehicle was involved, but appears that excessive speed played a role in the single vehicle collision. The Viaduct was reopened for north bound traffic just before 4 am Monday morning.