CORONADO, Calif. -- A law enforcement checkpoint on the island side of the San Diego-Coronado Bridge resulted in the arrests of 11 suspected drunken drivers and 28 vehicles being impounded, police said Sunday.

The operation wrapped up early Sunday, but the names of those arrested were unavailable, according to Chula Vista police Agent Rusty Rea.

Three people were booked on suspicion of possessing marijuana, he said.

Police impounded 28 vehicles from people without valid licenses.

Officers from Chula Vista, Coronado, National City and San Diego participated in the crackdown, as did sheriff's deputies.