Due to electrical problems on the elevated section between Rainier Beach and Sea-Tac, Link service has been suspended on that portion of the route until further notice. A bus bridge is in place between Rainier Beach and Sea-Tac, and Link service remains available from Westlake to Rainier Beach. Expect long delays.
More info on this as it becomes available.
[UPDATE: As of 10:00am service had been restored. The new alert showing resumed service was slow to arrive.]