23 CFR §140.604
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Projects to be financed from other than Interstate funds shall be subject to a 36-month reimbursable schedule upon conversion to regular Federal-aid financing (See appendix). FHWA will consider requests for waiver of this provision at the time of conversion action. Waivers are subject to the availability of liquidating cash.