AMP: 3 Location: Markwell Ave and Yellowstone Ave, Silverton As soon as this I-90 Business Spur begins, it ends a block later as we approach the town of Silverton. This used to be a stub end of a business loop from Osborn to here, but now it is merely this .12 mile long spur and … Continue reading Interstate 90 Business Spur, I-90 to Yellowstone Ave