Tribes Served Northwest Band of Shoshone Nation, Shoshone-Bannock Tribes. Our Staff Maggie Martinez Fiduciary Trust Officer Cell: 208-252-2322 Office: 208-238-2310 Fax: 208-237-1744 Mailing Address Bureau of Trust Funds Administration Attn: Fort Hall Agency P.O. Box 26928 Albuquerque, NM 87125 Office Location BIA Building 49 Bannock Ave. (Corner of Agency and Bannock Roads - Bldg. 606) Fort Hall, ID 83203 Coming from HY 91: Upon entering the Fort Hall town site turn east on to Agency Rd, go two blocks, turn right on Bannock Rd. The office is in the first building on your right. Coming from Interstate 15: Take Exit 89 off the interstate. At the exit stop sign turn west on to Simplot Road and go approximately 1.5 miles where the road ends at a T intersection. Turn right on to Hiline Road and travel approximately 0.4 mile to the first stop sign. The office is the yellow building on your right. Unclaimed Money BTFA currently holds $80 million in trust for thousands of beneficiaries with no known address. Search our records to see if your name, or the name of someone you know, is on the list.