We're all in that boat. The S-Line, NC/VA, for example can go for months or years without new information. There's a local organization in Western NC,
https://captrail.org/ The studies do have a purpose, to spend wisely. The agencies are not treating this like an emergency bridge repair. Planet earth, or our economy, or the non-driving public, might disagree.
The S-Line has every approval, while that process is just starting for Asheville service. You could ask your state legislators or governor, or reps in DC.