Last Driven September 2017 AMP: Pacific Hwy #1/294 Location: I-5 and Barbur Blvd, Portland Exit here for a truck lane which heads to a deeper portion of the Barbur Blvd. underpass. AMP: 294 Location: I-5 and Barbur Blvd, Portland Reassurance shield after the 99W junction.  AMP: 298 Location: I-5 and Corbett Ave, Portland 10 minutes to I-205 via … Continue reading Interstate 5, OR 99W to I-405/US-26/OR 43