Yeah, you need to deal with the water that will come down your new road. If you put some good ditches on each side of the new road and "crown" the road, that is make the (rain) water that falls on your road make it's way to yur new (side) ditches by "crowning" or grading the road so that the center is 4" or so higher than the sides. On that slope, the more (crown) the better, in your pic looking down hill, it looks pretty steep. Mother nature will tell what you need to do, but until you get it handled, you will be dragging your road back up hill with your box blade after each heavy rain. You may end up needing to grade in some "water bars" for some severe rains. As for your nice new pipe, it looks nice! I've used bags of ready mix concrete stacked around the inlet side of the pipe for a head wall. Stack them up to form a nice inlet shape and so that the moving water will not erode around your pipe, make sure that you get some under it where the water enters, then drive some 1/2" rebar down through them in several areas (the more the better) to "tie" the whole thing together. The concrete bags will harden on there own and the bags will dissolve in a few months and it will protect your pipe in the event of a "gully washer" that will eventually come. Nice job.:thumbsup: