Ok. Well tomorrow I’m gonna do a little pricing and discuss with county options. I’ll go as big as I can. Looking at it I don’t think 24” will fit. It’s not that big of a ditch( could be wrong as it’s not exactly my expertise). But the leaves and sticks here are a concern as lots of trees. I may have a lead 2 pieces of 18” concrete pipe that were purchased 4 years ago and just been sitting unused. Might try to get those!