Law enforcement's annual crackdown on holiday drunken driving in Santa Clara County was down slightly from the same period in 2012, according to the sheriff's office.

From Dec. 12 at midnight through January 1 at midnight, the Avoid the 13 campaign resulted in 452 people arrested on suspicion of driving under the influence of drugs or alcohol, according to Sgt. Kurtis Stenderup of the Santa Clara County Sheriff's Office. The number is not official and may increase as some agencies have yet to report their statistics.

The number of arrests are similar to the totals in 2012, when 458 people were arrested on suspicion of DUI.

There were no reported fatalities associated with drunken driving, according to law enforcement.

The 19-day, Avoid the 13 campaign is a countywide effort aimed at cracking down on drunken drivers on county freeways and city streets.

Law enforcement officials will renew their Avoid DUI operations during Super Bowl weekend in February and then again for local St. Patrick's Day festivities in March, Stenderup said.