UPDATE (3:58 p.m.) - The water main break has been repaired and city officials say no further traffic delays are expected.
(11:35 a.m.) - Crews are working to repair a broken water main at Tassajara Dr. and Foothill Blvd. in San Luis Obispo.
A 12" cast iron main broke for an unknown reason at about 7 a.m. Wednesday, and city officials say water service in the 100 and 200 blocks of Tassajara may be affected.
Repairs are expected to be complete by 4:30 p.m.
Crews are asking drivers to use caution in the area.