Cascade River Road conditions? in North Cascades Posted July 8 It was not open as of last weekend and I heard it's probably not going to open this summer. I took a mountain bike up the road (and a friend took a touring bike which managed okay) and honestly the road seems to be mostly repaired. There were a couple of rocky sections but nothing a sedan couldn't handle. I went as far as the Boston Basin trailhead. It was closed about 4.5 miles from Boston Basin btw.