A motorcyclist was killed in a crash on the Alaskan Way Viaduct for the second time in less than 24 hours, snarling traffic Thursday afternoon.
Police say the 52-year-old motorcyclist was riding northbound on a 500 cc Aprilia motor scooter at around 2:50 p.m. when he hit a guardrail near Seneca Street and was thrown from the motor scooter. He died at the scene.
The accident closed the northbound lanes of State Route 99 until about 7:00 p.m, backing up traffic in the area for hours.
The crash comes less than a day after a motorcyclist was killed Wednesday night in a crash near First Avenue South, police said.
The cause is unknown. The rider flew over the side of the viaduct and landed on Railroad Avenue below.
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