It's exactly the same here is NE Essex. We live in a very rural location with the B1352 running through with a 7.5T weight limit. With regular A120 closures the diversion is through this road with all the 44T LGVs going to/from Harwich International Port. Every time a lorry goes in the ditch or bridges get damaged and culverts collapse. As resident we always report this stuff to Highways England and Essex County Highways. They haven't got a clue until we get them on site.
A recent culvert blocked was causing serious flooding just down the road. Took me and other residents about 4 years of reports with photos to get it fixed
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The above is now fixed
But what seriously pisses me off is that fact that the authorities no longer clean out the ditches.
And the grips that let the water run from the road to the ditch are not cleaned out either.
The result is that the surface water runs down the road and not in the ditch - WTF is going on