The Wall - Part 1: Building a wall of concrete bags on the upstream end of a washed-out culvert.

We have a culvert that frequently washes out on the upstream side, due to the force of water hitting the embankment around it. And now we need to drive tractors across it so we can plant trees. So the roadway above the culvert needs to be widened and strengthened to support heavy equipment. But I have not been able to get any local suppliers to bring concrete or gravel or rock, because this job is too small most of them to deal with. After studying numerous solutions, I decided that the easiest and cheapest solution was to build a wall at the upstream end of the culvert with concrete bags and backfill with dirt, thereby widening the roadway. This design allows exact placement of supports without building forms or wasting materials.