MP: 4.8 Location: SR 4 and SR 401, Naselle Reassurance shield after SR 401   MP:  15.12 Location: SR 4 and Altoona-Pillar Rock Rd, Rosburg Reassurance shield after old JCT SR 403, a highway decommissioned in 1992 that went down to Altoona   MP: 25.13 Location: SR 4 and Bjornsgard Rd, Wahkiakum Cty Reassurance shield … Continue reading State Route 4, SR 401 to SR 409