Untravellable

By encreasing the hollowness of a wide carriage road, much beyond the utility of form, the margins might no doubt be brought into a travellable state; whereas, of a flat road, in a wet season, every part, from side to side becomes equally untravellable.

Greece however is in a very untravellable state just now.

[I]n this parish—without rectory, without school, without rector, with a pauper population, and untravellable roads—your petitioner spent upwards of seven months.

. . . the defendant to have the right to reject 1000 sheep from the number mustered, which were to include lame or untravellable sheep.