Law enforcement agencies in Georgia are joining a nationwide crackdown on drunk driving over the Fourth of July holiday.

The Governor's Office of Highway Safety says the national celebration is one of the most dangerous holidays on Georgia roads. In the past two years, the state has averaged 88 alcohol-impaired crashes during the period from July 3-5.

Law enforcement agencies across the state are partnering to launch their annual Operation Zero Tolerance campaign.

As of Thursday, the state had seen 520 traffic fatalities this year. That's up 4 percent from 499 last year on June 20.

This year's Operation Zero Tolerance campaign starts Friday and runs through July 7.

Tags: law enforcement, Governor's Office of Highway Safety, DUI, 4th of July, alcohol-related traffic deaths, fourth of july