Bad news for the nearly 100,000 drivers who use the Ina-Oracle roads intersection on a regular basis.
Traffic signals will be turned off at 9 a.m. Wednesday and stay off for at least 10 hours.
Crews working for the Pima County Department of Transportation and the Regional Transportation Authority will also close at least one lane both northbound and southbound on North Oracle all day.
Major delays are expected as Pima County sheriff’s deputies direct traffic while crews work to connect and synchronize the new indirect-left signals recently installed at the intersection.
Tying in the Arizona Department of Transportation-controlled lights to the lights controlling the “Michigan left” turns to the east and west of the intersection will make the traffic flow more efficient, county officials said.
About 96,000 cars pass through the busy Ina-Oracle intersection each day, county officials estimate.