A hit-and-run accident on north Interstate 95 near Catonsville injured two people and tied up traffic for miles yesterday afternoon, said a spokeswoman for Maryland Transportation Authority Police.

Lori Vidal said the vehicle that caused the accident -- its description was not released -- struck a 1996 Mercury and a 1996 Cadillac about 3: 12 p.m. Vidal said a man from New York, who was in the Cadillac, and a New Jersey woman, who was in the Mercury, were treated for injuries at Maryland Shock Trauma Center. Their conditions were not available.

Vidal said the accident forced many motorists to take alternate routes. The incident caused several-mile backups at the Key Bridge and the Fort McHenry Tunnel. From the Harbor Tunnel, vehicles were backed up to the Baltimore Beltway.

By 7: 30 p.m., traffic was back to normal, Vidal said.

Pub Date: 2/09/99