From the Seattle Department of Transportation: 

Freight Community:

The 5-legged intersection of Delridge Way SW/Chelan Ave SW/SW Spokane Street/W Marginal Way SW at the Port of Seattle Terminal 5 is being updated to include additional markings for pedestrians and bicycles as noted in this flier.  

Work will commence the weekend of October 24th and will continue during weekends only to minimize impacts to vehicle and freight traffic.

View flier for more information