UPDATE: August 15, 12:30 p.m.

All lanes are now open, but authorities could close the highway without notice as conditions change.

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UPDATE: August 13, 8:20 p.m.

U.S. 191 is open in one lane along the Bacon Rind Fire, with a pilot car leading traffic. Allow up to an hour of extra time if you must drive Gallatin Canyon and if possible, use alternate routes.

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UPDATE: August 13, 6:20 p.m.

The Bacon Rind Fire is actively burning on the west side of Highway 191. Due to smoke impacts and fire fighting activities along Highway 191, MT Dept. of Transportation is using pilot cars to lead traffic through the area. There may be 1 hour delays.

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UPDATE: August 13, 5:35 p.m.

U.S. 191 is currently open to one lane of traffic in the area of the Bacon Rind Fire between Big Sky and West Yellowstone. People travelling U.S. 191 should recognize that the road could close without notice, depending on conditions.

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August 13, 4:30 p.m.

The Gallatin County Sheriff's Office has announced that U.S. Highway 191, between Big Sky and West Yellowstone, has been closed due to smoke in the area. Smoke from the Bacon Rind Fire has made travel conditions dangerous and authorities won't reopen the well-traveled stretch of road until conditions improve.

U.S. Forest Service