Florida's Department of Transportation approved guardrails between State Road 80 and a canal in Western Palm Beach County.
There have been several drownings resulting from crashes along the highway.
The most recent drowning involves Ocie Mae Saulberry.
She was missing for 30 days before her car was found in the canal.
The Florida Department of Transportation conducted a study and determined the road is too dangerous and in need of guardrails.
Loved ones of the victim only wish the guardrails were in place sooner.
"If they put the guard rail up, that means I don't have to worry about anyone else's child. It will probably save their life. It didn't save her life, but it will save somebody else's child's life," said Ocie's mother, Rosetta Saulberry.
The cost for the project is $4 million, but the road will remain dangerous for now.
The Florida Department of Transportation won't take bids for the project for another year.