My gravel driveway has apparently gotten wider over time. It is now up to 16 feet wide in some places. What should be grass sloping away from the driveway is driveway. So this weekend I dug up the side of the driveway to bring it back where it belongs. Now I want to do something to edge the entire length of the driveway to keep it all pretty and contained. Way too much driveway for railroad ties, landscape timbers, or 6x6s. So I think what I want to use is steel edging. It will flexible enough to shape properly, and strong enough to not fall apart in a week. The best I can find looks like this: https://www.homedepot.com/p/COL-MET-...814B/100137006
I figure I can hammer it a bit into the base layer. That and stakes should be pretty solid. I will backfill topsoil up to it on the lawn side, and crusher run on the driveway side. I don't want a lot sticking up, just enough to keep it separated.
Any suggestions or other ideas?