Go inside the Phoenix Fire Department 911 call center to learn about what’s going on when you call 911 in the Phoenix metro area. Hannah Gaber/

A busy portion of westbound Interstate 10 in central Phoenix was shut down for about three hoursFriday night as police negotiated with a person who was sitting on the edge of an overpass, officials said.

The shutdown caused massive backups after westbound I-10 was closed at Seventh Street about 8 p.m. as Phoenix police worked the situation on the Third Avenue bridge, police said.

The closure eventually extended back to the mini-stack, impacting traffic on State Route 51 southbound, which was not allowed to head west onto I-10. 

At one point, a Phoenix Fire Department ladder truck could be seen raised toward the Third Avenue bridge at the Deck Park Tunnel.

The closures caused backups along westbound I-10 all the way back to Van Buren Street and delayed traffic on Loop 202 westbound back to 32nd Street, the Arizona Department of Transportation said.

The situation ended when the person was taken into custody about 11 p.m., and the freeway began reopening shortly afterward.

On Thursday, Interstate 17 was shut down for more than three hours in both directions after a man climbed on top of a pedestrian overpass south of Glendale Avenue and threatened to jump. He eventually was brought down.

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