Verb (used with object) : A bridge traverses the stream. ,The climbers traversed the east face of the mountain.    From Dictionary.com. 

Verb (used without object) : a point in the river where we could traverse.    From Dictionary.com. 

The diggers were washed out of their holes, the Flat became an untraversable bog.    From Wordnik.com.  [Australia Felix] Reference

These were uncrossable distances, barely manageable at a slow walk, and completely untraversable at a run.    From Wordnik.com.  [Scenes From An Art Fair, Written After Seven Hours of Driving To CT] Reference

But all that really just allows us to coexist with the inviolable, untraversable, and utterly vast spaces between us. p.    From Wordnik.com.  [Gilead at Ray Fowler .org] Reference

Because he was not of their blood, White Crow could do things which they could not and visit worlds forbidden or untraversable by them.    From Wordnik.com.  [The Skrayling Tree]

They would have effect limp at untraversable distances behind cause; they would keep destiny carefully abed and feed it upon spoon-victual.    From Wordnik.com.  [The Atlantic Monthly, Volume 07, No. 43, May, 1861 Creator] Reference

Our account does not rob the mathematicians of their science, by disproving the actual existence of the infinite in the direction of increase, in the sense of the untraversable.    From Wordnik.com.  [Physics] Reference

But if indivisible, it is not infinite, except as the voice is invisible; but people do not mean this, nor are we examining this sort of infinite, but the infinite as untraversable.    From Wordnik.com.  [Metaphysics] Reference

Despite the horrendous facts of the case, the court made the correct determination and spared us, as a society, of the burden of attempting to navigate an untraversable slippery slope.    From Wordnik.com.  [Supreme Court] Reference

Two quiet figures were within the room; two figures, equally still and impassive, equally removed by an untraversable distance from the teeming earth and all that it contains, though soon to lie in it.    From Wordnik.com.  [Little Dorrit] Reference

The country was untraversable on account of the heat.    From Wordnik.com.  [History of Phoenicia] Reference

Between nonentity and being yawns the untraversable gulf of infinity.    From Wordnik.com.  [The Destiny of the Soul A Critical History of the Doctrine of a Future Life] Reference

On reaching the other end, we found the gate locked ut this time untraversable, so had to back track a bit.    From Wordnik.com.  [TravelPod.com Recent Updates] Reference

Even of those who admitted, in theory, that Cathay lay to the west of Europe, most deemed the distance untraversable.    From Wordnik.com.  [The Discovery of America Vol. 1 (of 2) with some account of Ancient America and the Spanish Conquest] Reference

I trust, corrupt no reader irretrievably, to untraversable leagues beyond the last hope of redemption: but, even so, it is a frankly unethical performance.    From Wordnik.com.  [The Jewel Merchants A Comedy in One Act] Reference

Everywhere, in this bleak snow-solitude, the way seemed barred, yet ever the trail curved and coiled, finding low divides and avoiding the higher and untraversable chains.    From Wordnik.com.  [Smoke Bellew] Reference

Liffre is in the hills, and the road which separated it from Châteauborne, wild and lonely enough in daylight and when the weather is fair, is almost untraversable in winter.    From Wordnik.com.  [Animal Ghosts Or, Animal Hauntings and the Hereafter] Reference

The advantages of the position, briefly, were these: the flanks were quite well protected by the natural defenses there, Round Top up the left, and a rocky, steep, untraversable ground up the right.    From Wordnik.com.  [Haskell's Account of the Battle of Gettysburg. Paras. 26-50] Reference

Odovacar himself, again a fugitive, sped across the plain south-eastward to Ravenna, compelled like so many Roman Emperors before him to shelter himself from the invader behind its untraversable network of rivers and canals.    From Wordnik.com.  [Theodoric the Goth Barbarian Champion of Civilisation] Reference

Nature had tumbled down an impenetrable bewilderment of rock, the hillsides cracking into deep, dark crevices, and the crests of the mountains showing behind and beyond a massed confusion of crags and hollows, trackless and untraversable.    From Wordnik.com.  [The Life of Captain Matthew Flinders] Reference

It seemed that Nature had tumbled down an impenetrable bewilderment of rock, the hillsides cracking into deep, dark crevices, and the crests of the mountains showing behind and beyond a massed confusion of crags and hollows, trackless and untraversable.    From Wordnik.com.  [The Life of Captain Matthew Flinders]

Politically, however, Arabia is weak, as has been shown in a former volume; while geographically she presents to the north her most arid and untraversable regions, so that it is rarely, and only under very exceptional circumstances, that she menaces seriously her northern neighbors.    From Wordnik.com.  [The Seven Great Monarchies Of The Ancient Eastern World, Vol 5. (of 7): Persia The History, Geography, And Antiquities Of Chaldaea, Assyria, Babylon, Media, Persia, Parthia, And Sassanian or New Persian Empire; With Maps and Illustrations.] Reference

The effect of this conformation of the country was, in early times, to render Phoenicia untraversable by a hostile army, and at the same time to interpose enormous difficulties in the way of land communication among the natives themselves, who must have soon turned their thoughts to the possibility of communicating by sea.    From Wordnik.com.  [History of Phoenicia] Reference

From Palestine the Lebanon region would have to be entered on, where, though the Cœle-Syrian valley presents a comparatively easy line of march to the latitude of Antioch, the country on either side of the valley is almost untraversable, while the valley itself contains many points where it can be easily blocked by a small force.    From Wordnik.com.  [Ancient Egypt] Reference

"In the first place," Jesson explained, "the city itself stands at the arm of the river, in a sort of cul-de-sac, with absolutely untraversable mountains on three sides of it.    From Wordnik.com.  [The Great Prince Shan] Reference

Our roads were untraversable.    From Wordnik.com.  [Mrs. Trollope's America] Reference