The Geocommunicator interactive map that was mentioned in the OP (http://www.geocommunicator.gov/blmMap/Map.jsp?MAP=LAND
) is also accessible directly within Google Earth, which I find much more pleasant to use.
There are two ways to get it working. Here are details for the (older) hard way: http://www.geocommunicator.gov/GeoCo...ith_Google.pdf
And the easy way is just to save this kmz and open it from within Google Earth: http://www.geocommunicator.gov/ARCGI...l/mapImage.kmz
The "Surface Management Agency" layer is what you want, although keep in mind that it's a general guideline, and it does include Wilderness and ACEC areas that are off-limits even though they're BLM.