23 CFR § 661.15 - What are the eligible activities for TTFBP funds?
---
identifier: "/us/cfr/t23/s661.15"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "23 CFR § 661.15 - What are the eligible activities for TTFBP funds?"
title_number: 23
title_name: "Highways"
section_number: "661.15"
section_name: "What are the eligible activities for TTFBP funds?"
chapter_name: "FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "G"
subchapter_name: "ENGINEERING AND TRAFFIC OPERATIONS"
part_number: "661"
part_name: "TRIBAL TRANSPORTATION FACILITY BRIDGE PROGRAM (TTFBP)"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "23 U.S.C. 120(j) and (k), 202, and 315; 49 CFR 1.81, 1.84, 1.85; 23 CFR part 490, subpart D."
regulatory_source: "89 FR 57082, July 12, 2024, unless otherwise noted."
cfr_part: "661"
---
# 661.15 What are the eligible activities for TTFBP funds?
TTFBP funds can be used:
(a) To carry out any planning (including safety inspection of in-service bridges), design, engineering, preconstruction, construction, and construction inspection of new or replacement TTF bridges;
(b) To replace, rehabilitate, seismically retrofit, paint, apply calcium magnesium acetate, sodium acetate/formate, or other environmentally acceptable, minimally corrosive anti-icing and deicing composition;
(c) To implement countermeasures, including scour countermeasures, for TTF bridges classified as scour critical or in poor condition, having a low load capacity, or needing geometric improvements, including multiple-pipe culverts; or
(d) To demolish the old bridge if a bridge is replaced under the TTFBP.