Hurricane Ian updates: Florida death toll climbs

President Joe Biden said officials are hearing early reports of what may be a substantial loss of life due to Hurricane Ian, he said at a press conference at Federal Emergency Management Agency headquarters Thursday.

"This could be the deadliest storm in Florida history. The numbers we have are still unclear, but we're hearing early reports of what may be substantial loss of life," Biden said.

Biden also promised support to state and local officials as officials assess the damage caused by the storm, saying the federal government will cover the entire cost of clearing debris and of rebuilding public buildings like schools and state fire stations. The government will also be providing support to people with destroyed or damaged homes.

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Hurricane Ian has left ‘many families hurting,’ Biden says

The president said America will “pull together as one team” in efforts to assist people impacted by the storm.

ABCNews.com

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