Greetings, yes there is a ...

Greetings, yes there is a solution, planting the banks with Vetiver zizanoides, very cheap and effective. Is being increasingly used along freeways also and other public works as works much better than concrete walls for example.

The only tricky thing is that because it's such a great weaving material it may get stolen a lot, but that could be prevented by different means. For the Vetiver see: http://www.vetiver.org/