President Joe Biden and Federal Emergency Management Agency Administrator Deanne Criswel spoke with Lee County Commissioner Cecil Pendergrass Thursday to discuss response to the hurricane and ways the administration can support the county in the aftermath of Hurricane Ian.

The administration said it would assist in meeting immediate needs for search and rescue efforts, power restoration, helping to address challenges faced by local hospitals and problems presented by damage to roads and bridges, according to a statement from the White House.

-ABC News' Justin Gomez

The Sanibel Causeway, which connects Sanibel Island to mainland Florida, and the Matlacha Pass Bridge, which connects Pine Island to the mainland in Cape Coral, are not passable and will require structural rebuilds due to the storm, Florida Gov. Ron DeSantis said Thursday.

Officials have received reports of damages to other bridges. A team of 100 engineers is on site to do bridge inspections.

"I anticipate there will likely be other bridges that have suffered damage, but once bridges are inspected and determined to be safe, they will be reopened as soon as possible," DeSantis said.

Tampa International Airport announced it will resume commercial operations on Friday at 10 a.m. after shutting down due to Hurricane Ian.

Although an inspection of the airfield and facilities determined the airport did not sustain any serious damage during the storm, reopening Friday will give the airport and its partners, including the Federal Aviation Administration, Transportation Security Administration and airlines, time to take necessary steps to resume business safely, the airport said in a statement.

This includes bringing back aircraft and staff that had been removed ahead of the storm.

The airport had suspended operations at 5 p.m. on Tuesday ahead of Ian's landfall.

-ABC News' Amanda Maile

U.S. Coast Guard air crews rescued seven people in four separate rescue missions Wednesday night, Petty Officer Ayla Hudson told ABC News.

The rescues occurred in the Fort Myers and Tampa areas, Hudson said. The Coast Guard's search and rescue missions are still ongoing.

-ABC News' Victoria Arancio

Ian remains a tropical storm with winds of 50 mph, but the storm system is expected to rapidly intensify on Sunday as it moves over warm waters in the Caribbean Sea, according to the National Hurricane Center.

The seawater currently carries very favorable conditions for strengthening over the coming days, with temperatures between 85 and 90 degrees Fahrenheit -- the perfect temperatures for fueling a powerful storm as it stays over open water.

Ian is expected to strengthen to a hurricane by Sunday night and into a major hurricane later Monday night as it passes by Cuba.

The NHC currently forecasts Ian to strengthen into a major Category 4 hurricane on Tuesday in the Gulf of Mexico as it heads toward Florida.

Ian is expected to make landfall on the west coast or the panhandle of Florida on Wednesday or Thursday.

Some weakening could occur before the storm system makes landfall, possibly dipping below major hurricane status before impacting coastal communities.

A hurricane warning is currently in effect for the western portion of Cuba, where flooding rains and major storm surge are forecast.

-ABC News' Riley Winch