Washington State Route 538

The highway, which has existed as a county road since 1911, travels from Interstate 5 (I-5) in the west, passing former U.S. Route 99 (US 99), now Riverside Drive, and Skagit Valley College's main Mount Vernon campus before terminating at a roundabout with SR 9.Before being designated Secondary State Highway 1G (SSH 1G) in 1937, the current roadway that is now SR 538 was a county road through farmland for 26 years.State Route 538 (SR 538) begins at the Interstate 5 (I-5) interchange in northern Mount Vernon located south of the Skagit River.[14] Between early June and late July 2007,[15][16] the Washington State Department of Transportation (WSDOT) constructed a roundabout at the SR 9 and Schopf Lane intersection,[17][18] the first in Skagit County.[19][20] A city-led project to widen the section of College Way that passes under I-5 at the western terminus of SR 538 began construction in December 2018 and was completed in 2020.
Mount VernonUnited StatesWashingtonSkagitState highways in WashingtonInterstateScenicPre-19641964 renumberingFormerSR 536SR 539state highwaycity limitsurban growth boundarySkagit CountyU.S. stateInterstate 5U.S. Route 99Skagit Valley CollegeroundaboutPrimary State Highway 1SSH 1AbypassedSkagit Riverdaily averagerail tracksBNSF Railway1964 highway renumberingWashington State Department of TransportationSeattleVancouver, BCUS 99Sedro-WoolleyArlingtonWashington State LegislatureGoogle MapsCity of Mount VernonUnited States Geological SurveyWashington State UniversityWashington State Highway CommissionDepartment of HighwaysUniversity of Texas at AustinSkagit Valley HeraldSR 500SR 501SR 502SR 503SR 504SR 505SR 506SR 507SR 508SR 509SR 510SR 512SR 513SR 515SR 516SR 518SR 519SR 520SR 522SR 523SR 524Edmonds SpurLynnwood SpurSR 525SR 526SR 527SR 528SR 529SR 530SR 531SR 532SR 534SR 536SR 539SR 542SR 543SR 544SR 546SR 547SR 548SR 599SR 514SR 537SR 540