There were several (4 or 5) Flow Trails planned. ARR and KOM were stretched tight to get one flow trail built and open. There are plans to build a parking lot at the top of the Flow Trails. Travis County will have to build the parking lot. It is not in the current Travis County budget. A parking lot may not happen for years, it at all.
In order to get the trail open as soon as possible - temporary signs were installed. I don't know how those signs have faired since I have not been there in months. The Return Trail and Flow Trail were beat in pretty good and the signs were up and readable the last time I was there. Travis County has put up some 'used road signs" (One Way, Do Not Enter, etc.). They seem to have a source for those ARR does not 😉
I hope that people will use and enjoy these trails and not get hurt. If you like them, please tell the park staff. Good feedback will help get more trails opened. Like maybe more of the flow trails that are already planned for Reimer's Ranch.