Haskins was trying to cross the westbound lanes of Interstate 595 when he was struck, Florida Highway Patrol spokeswoman Lt. Indiana Miranda told ESPN.
The Highland Park native had been training in South Florida with his teammates, the outlet said.
Haskins grew up in New Jersey but later moved to Potomac with his family. He played for the Bullis School and ultimately went on to play football for Ohio State.
In 2019, he was drafted by the Washington Redskins but signed with the Pittsburgh Steelers in 2021.
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