Joe Keller said:

Thanks for the info. That website is not the same as the old site, so there must be new operators.

I'd be surprised if they could block the road off and deny access to the trails and campgrounds that are up there in addition to the resort.

It was just the road that went to the store and Paul Dennis campground, etc.  When you come to the lake, it is the left fork at the guard station that was blocked.  I'm not sure if there is another way up that side or not.  I'm not really too familiar with Olallie Lake.  I've only been there 3 times.  My guess is that the block is only for the winter and will be removed when it opens in the spring.