StacksVerified U.S. regulatory reference

23 CFR §661.31

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Yes. All TTF bridge projects must be listed on an approved FHWA TTP TIP. TTF bridge projects included in the TTP TIP that are not fiscally constrained may still be included as a list of projects dependent upon the availability of additional resources, also known as an “illustrative list”.