Published: Apr 02, 2013 10:22 AM EDT
Updated: Apr 02, 2013 1:16 PM EDT

COLLIER COUNTY, Fla.- Crews are working to control a 20,000-acre wildfire in Big Cypress National Preserve that's been burning for four days, and are also monitoring how it may impact traffic on Alligator Alley.

The highway is back open this afternoon, after fog shut it down overnight, but it hasn't given firefighters any rest. The park ranger with Big Cypress National Preserve said the winds out of the northwest help keep smoke off of the highway, and the roads weren't closed as a result of the fire, but from fog. 

The fire is about 45 percent contained.

This afternoon, officials will hold an operational meeting to discuss the fire. Officials say it started suspiciously, as there were no controlled burns in the area, and no lighting strikes.

FHP will continue to monitor the visibility today and tonight. The traffic is currently flowing, but FHP says the roads will probably close again tonight.

Trust WINK News to bring you the latest on this fire.