You could try http://www.uthrs.org/Calendar.aspx, and scroll all the way to the bottom. The calendar itself is embarrasingly out of date, but the trip rating information is probably still accurate: I am pretty sure that information was copied from the Skiing committee's web site a while back -- except, of course, the Skiing committee has changed their web site since, and I no longer seem to be able to find trip ratings information on their web site.
Not sure about other resources that may be there are. 