I just rode up the old Historic Columbia River Hwy from near Troutdale to Ainsworth State Park on Monday and Tuesday. There's definitely some construction going on right now, namely on the viaduct around Vista House at Crown Point. They had closed it to one lane and had a flagger. The new pavement on the stretch between Women's Forum to Latourell Falls is beautiful, though. To note: they haven't repaved the last quarter-mile near the bottom of the hill at the Latourell Creek Bridge, so you still need to use caution there as the old pavement is pretty crappy.