Where are freeway HOV lanes located?
HOV lanes are located on most of the major freeways in King County and southwest Snohomish County. The HOV system is currently being expanded into Pierce County. See the HOV webmap to see where freeway HOV lanes are currently located, and where they are planned for the future. HOV lanes run in both directions on I-5 between Everett and Northgate. They exist only intermittently on I-5 between Northgate and downtown Seattle. On the mainline, there is a southbound HOV lane in the Seattle downtown area from approximately Denny to Marion, and then from I-90 southward. In the northbound direction, the mainline HOV lane ends just before I-90, and then does not begin again until Northgate. There are also HOV lanes located in the Reversible Express Lanes on I-5 between Northgate and downtown Seattle. HOV lanes run the entire length of I-405 in both directions and exist only intermittently on I-90 between Bellevue and Seattle. There is a westbound HOV lane on the outer mainline roadway between B
