Two crashes with injuries Sunday evening hampered traffic on Interstate 95 near Hobe Sound.
The Martin County Sheriff's Office says the second crash occurred at the scene of the first crash. Both have serious injuries.
Florida Highway Patrol (FHP) says one of the accidents was a single overturned vehicle. Two people were ejected onto the highway in that crash. One person was airlifted to St. Mary's Medical Center. Their injuries do not appear to be life-threatening, according to FHP.
All lanes are now back open.