Yes. Tribes may use flexible financing in the same manner as States to finance IRR transportation projects, unless otherwise prohibited by law.
(a) Tribes may issue bonds or enter into other debt financing instruments under 23 U.S.C. 122 with the expectation of payment of IRR Program funds to satisfy the instruments.
(b) Under 23 U.S.C. 183, the Secretary of Transportation may enter into an agreement for secured loans or lines of credit for IRR projects meeting the requirements contained in 23 U.S.C. 182. Tribes or BIA may service Federal credit instruments. The secured loans or lines of credit must be paid from tolls, user fees, or other dedicated revenue sources.
(c) Tribes may use IRR Program funds as collateral for loans or bonds to finance IRR projects. Upon the request of a tribe, a BIA region will provide necessary documentation to banks and other financial institutions.