Sinkhole closes SR 89A south of Flagstaff

Posted: Updated:
By Jennifer Thomas By Jennifer Thomas
By Jennifer Thomas By Jennifer Thomas
By Jennifer Thomas By Jennifer Thomas
By Jennifer Thomas By Jennifer Thomas
By Jennifer Thomas By Jennifer Thomas

FLAGSTAFF, Ariz. -- A portion of a scenic northern Arizona highway remains closed because of a sinkhole in the roadway.

The Arizona Department of Transportation said state Route 89A was closed Saturday in both directions at the Oak Creek Canyon switchbacks about 15 miles south of Flagstaff.

Repairs of the roadway damage started Monday, but the roadway remains closed between mileposts 387 and 390 and is expected to remain closed until later this week, according to ADOT.
 
Crews used heavy equipment to excavate a 6-foot deep, 8-foot wide section of the roadway to remove loose material underneath the pavement near milepost 388, where the sinkhole was originally spotted Saturday afternoon on the northbound lane.
 
After the earthwork was completed, crews filled the void with a liquid concrete-cement mix that needs to harden for at least 24 hours before the roadway can be repaved.
 
With SR 89A closed from the Pine Flats Campground to the Vista Point scenic overlook, the recommended detour from Sedona to Flagstaff is to take SR 179 to Interstate 17. The detour could add up to an extra half hour of travel time for motorists commuting between Sedona and Flagstaff.