MP: Historic Columbia River Hwy #100/30.3 Location: Wa-Na-Pa St and I-84, Cascade Locks US-30 leaves I-84 to travel through Cascade Locks. Stay straight to continue through Cascade Locks or turn left to get on the westbound interstate MP: Historic Columbia River Hwy #100/30.36 Location: Wa-Na-Pa St and I-84, Cascade Locks Reassurance shield for US-30 as … Continue reading U.S. Route 30, I-84 to I-84