AMP: Stadium Fwy #61/1 Location: I-405 and Sunset Hwy, Portland As 26 merges on to I-405, it will prepare to split to head over the Ross Island Bridge. AMP: 1 Location: I-405 and Broadway, Portland Follow the dancing arrows to exit for 26 east. Stay straight to head to I-5 and I-84.  E to OR 10, W … Continue reading U.S. Route 26, I-405 to I-405