The Seattle Department of Transportation tweeted at 5:57 am. Monday that the right lane of EB Highland Park SW, headed downhill toward West Marginal Way SW, was closed due to ice.

There's also serious ice buildup along Beach Drive, caused by water coming through and down the hillside of the 6000 block, where the latest mudslides have occurred. It has built up what amounts to compact ice over the roadway creating an ongoing hazard as long as temperatures remain low.
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From Twitter at shortly after 6:00 am KIRO 7 reported a rollover accident at SB 509 & Cloverdale.

The accident was being cleared at 7:00 am.

Another accident happened at California and Orchard Street at 8:30 am. Engine 37 responded to the scene. It appears that the ice near the scene was involved since scanner traffic had officers calling for de-icer to be applied from s.w. Myrtle to s.w. Orchard.

The ice sheet was approximately 90 feet in length.