UPDATE (3:47 p.m.):
The northbound lanes have reopened, per ADOT.
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A crash on Interstate 19 in Sahuarita has shut down all northbound lanes.
According to the Arizona Department of Transportation, the crash happened at milepost 47 (kilometer 75).
Arizona Department of Public Safety said the crash involves two vehicles.
Drivers should find alternate routes, ADOT said. There is no estimated time to reopen.
Southbound lanes are unaffected.
