UPDATE (3:30 P.M.)
PCSD says the Catalina Highway has reopened at Mount Lemmon.
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The Catalina Highway to Mount Lemmon is currently closed due to heavy congestion up the mountain, the Pima County Sheriff's Department said in a social media post.
The roadway is expected to reopen at 3:15 p.m. today, Jan. 9.
Motorists should avoid the area and expect delays; we will provide updates when the road reopens.