Acreages with Wilderness Areas, Wilderness Areas plus IRA Categories 1B & 1B-1, and Wilderness Areas plus adjacent IRA Categories
All acreage figures are rounded to the nearest 1,000.  Note: All areas less than 500 acres were eliminated.
	Wilderness Alone	Wilderness+1B,1B-1	Wilderness+B1,1B-1,1C
East	2,009	2,131	2,469
West	26,917	31,542	40,889
Alaska	5,719	9,859	11,368
Sum	34,646	43,532	54,726
Definitions of Categories of Inventoried Roadless Areas
1B	Inventoried roadless area where road construction or reconstruction is not allowed
1B-1	Inventoried roadless area where road construction or reconstruction is not allowed, and the forest plan recommends as wilderness
1C	Inventoried roadless area where road construction or reconstruction is allowed