state route mile long state highway subdivision state washington highway extends southeast interchange interstate roughly parallels border pierce counties area educational institutions including community college high schools served route roadway built connector saint lake station designated original route ran following present day highway realigned serve new freeway later replaced highway renumbering trail built line bypass constructed route description begins exit diamond interchange interstate southern highway travels south home division south mall martin way intersection located west busiest intersections roadway daily average motorists pacific avenue roundabout turns east renamed pacific avenue northeast leaving city limits roadway begins parallel line owned south old pacific highway road named nearby saint lake crosses railroad tracks twice turning northeast parallel saint lake shoreline highway southeast parallel fort lewis outside community renamed passes intersecting future western terminus loop roadway enters city limits turning southeast serves shortly roadway serves crosses trail mile long rail trail operation ends street signed continues southeast alternate route stage foot wide lane bypass named loop completed open traffic bypass begins roundabout near current run road intersection travels east residential industrial area currently ending unfinished portion loop currently officially signed state route alternate stage finish loop segment currently highway turn south pass city park end traffic signal plans loop created construction completed october city actively anticipating completion stage traffic increased 1990s completed expected current state route moved alternate new state route history began unsigned county maintained road ran area station constructed road later extended west designated old route followed present day southern saint lake lake moved northern route freeway officially replaced highway renumbering interstate pacific avenue reconstructed widened late addition roundabout pacific avenue intersection major intersections entire highway
Washington State Route 510