TAMPA BAY -- Driving conditions are flowing and accidents have been minor in advance of Hurricane Irma, but bridge closures are expected over the next day or so, according to Florida Highway Patrol Sgt. Steve Gaskins.

"There's been heavy traffic, but it is flowing," Gaskins said.

There have been very few crashes and only one serious incident that occurred at 574 and U.S. 301.

Gaskins said the Skyway Bridge closes at 40 mph sustained winds, but this is the only bridge that closes at a specific numerical wind value.

More: Map: FL511 shows traffic, roadway conditions ahead of Hurricane Irma

Bridges like Gandy, Howard Frankland and Courtney Campbell will not close until troopers deem them unsafe.

Conditions that could lead to bridge closures are not expected until Sunday afternoon.

Make it easy to keep up-to-date with more stories like this. Download the 10 News app now.

Have a news tip? Email tips@wtsp.com, visit our Facebook page or Twitter feed.