A 5-month-old boy is recovering at a South Florida hospital after a medical scare brought traffic to a stop on the Dolphin Expressway on Thursday afternoon

Sebastian de la Cruz stopped breathing while riding with his aunt, Pamela Rauseo, who pulled over and started screaming for help.

"It really was the scariest moment of my life," Rauseo told ABC News.

Lucila Godoy was the first to stop and try to help, leaving her own toddler in her car to help the infant.

"We tried to start working as a team at that time," Godoy said.

Miami Herald photographer Al Diaz ran through lanes of traffic to get help.

"I don't know CPR well enough to try to aid with that, so I went to try to look for help in traffic, so I started waving traffic down," Diaz said.

He was able to attract the attention of Sweetwater police Officer Amauris Bastidas, who took over CPR, performing chest pumps while Rauseo breathed into Sebastian's mouth.

They kept Sebastian breathing until rescuers arrived and rushed him to Jackson Memorial Hospital.

Diaz later went back for his camera and captured the tense moments.

Rauseo said Sebastian was born prematurely and has respiratory issues.

PHOTOS: Strangers help save baby's life on SR 836

Published On: Feb 21 2014 08:50:59 AM EST
Photos by Al Diaz, The Miami Herald

A Miami Herald photographer captured the dramatic scene on the side of the Dolphin Expressway Thursday when a woman realized her infant nephew wasn't breathing.

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Courtesy: Al Diaz, Miami Herald