How to finish off a driveway culvert

Is there a reason you din't want to just leave it open with gravel around it?

David, what about putting larger rocks there? Around here it is called rip rock, but there is probably a proper name for it. That would help with any erosion?

Or a ground cover?

Good place for a dry creek bed.

https://www.thespruce.com/build-dry-creek-beds-for-landscape-drainage-2132745

Hi David: I think maybe a white picket fence would look nice, until someone ran it down :( But, maybe you can put up some of those landscape blocks or retaining or gardening blocks. Picture attached. just right click and select 'view image'. These ar from Home Depot. Here's the site: https://www.homedepot.com/s/landscape%2520blocks?NCNI-5

Good luck

How about some ground cover?

I would use some grass or any other ground covers

Rip rap is cheap and it will eventually fill in the deep cracks with silt and then weeds., It’s hard on the weed whip, lol.

I like the retaining wall blocks idea. They can be had for about 80¢ each or cheaper by the palette- with a little shopping.

Hello David,

Without a picture , I am just guessing - Maybe an Iron grill or grid? Best wishes.