StacksVerified U.S. regulatory reference

23 CFR §661.45

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The TTFBP funds from the Highway Trust Fund (HTF) provided to a project that cannot be obligated by the end of the fiscal year are to be returned to FHWA during August redistribution. The returned funds will be re-allocated to the BIA the following fiscal year after FHWA receives and accepts a formal request for the funds from BIA, which includes a justification for the amounts requested and the reason for the failure of the prior year obligation.