One lane of US 89A has reopened between Jacob Lake and Marble Canyon, according to the Arizona Department of Transportation. Traffic will alternate using the open lane to travel through the previously closed 34-mile stretch of highway (mileposts 545-579). A flagger will help guide drivers through the area.

A significant storm on Sunday afternoon covered parts of the two-lane roadway with large boulders and thick mud that made it impassable. ADOT crews with heavy equipment have been working around the clock since Sunday to clear the roadway of debris and reopen it.

ADOT engineers are currently assessing possible damage to the roadway following the storm, but the inspections will not hinder efforts to reopen the highway to a single lane.

There is no estimated time for when the highway will reopen to two-way traffic.

Drivers using US 89A to access the North Rim of the Grand Canyon are advised to expect possible delays. The restrictions on US 89A will not affect visitors to the South Rim of the Grand Canyon.

For the most current information about highway closures and restrictions statewide, visit ADOT’s Travel Information Site at, follow us on Twitter (@ArizonaDOT) or call 5-1-1.