Interstate 405 (abbreviated
I-405, and
colloquially referred to as
405 or
four-oh-five) in
Washington is a stretch of
freeway that bypasses
Seattle east of
Lake Washington. The northern terminus is in
Lynnwood and the southern terminus is in
Tukwila. The highway runs through what has since become the "
Eastside" technology center of
Bellevue and
Kirkland, making it an often congested commuter path. I-405 is known for its meandering "S-curves" through
Renton. It intersects with
Interstate 90 and a number of major state routes. Interstate 405 was laid over Secondary State Highway 2A.