
(North is at the bottom, south is at the top) An aerial view of the SR 9/SR 204 interchange. Frontier Village is on the left (east side of SR 9).

The average daily traffic volumes on SR 9 in the Lake Stevens area, where the corridor carries the most traffic, increased from 31,000 in 2000 to 34,000 in 2007.

Public surveys show traffic congestion is a major concern for most residents.