here's the latest press release i could find on the Multnomah Co. website:
i went through (by bike) a few weeks ago - there's a short (50') barricaded section where 3 feet or so of the downhill edge of the road has sloughed off. Not safe to drive, but easy (and seemingly safe) enough to get through on foot. Someone had even scooted the barricades slightly apart so it was relatively easy to walk through. I would guess it's closed to bikes/peds for liability reasons.