UPDATE as of 4:45 p.m.

All lanes are now open.

ORIGINAL POST: A mudslide is blocking part of state Route 509 at Dash Point Road.

Both directions of traffic are alternating through the northbound lane in the Federal Way area of the highway.

The incident was reported around 11:40 a.m. There is no estimate for what time all lanes of traffic will reopen.

We will post any new information as soon as it’s available.