DUNDALK, Md. (AP) 鈥 President Joe Biden got a firsthand look Friday at efforts to clear away the 鈥渕angled mess鈥 of remains of the collapsed Francis Scott Key Bridge in Baltimore, as cranes, ships and diving crews work to reopen one of the nation's main shipping lanes.

Aboard Marine One, circling the warped metal remains and the mass of construction and salvage equipment trying to clear the wreckage of last week's collapse, which killed six workers, Biden got an up close view of the devastation.

On the ground later, he received a briefing from local officials, the U.S. Coast Guard and Army Corps of Engineers on the situation in the water and its impacts on the region. The president also greeted police officers who helped block traffic to the bridge in the moments before it was hit by a ship 鈥 which helped avert an even larger loss of life.

鈥淚鈥檓 here to say your nation has your back and I mean it," Biden said from the shoreline overlooking the collapsed bridge in Dundalk, just outside Baltimore. "Your nation has your back.鈥

Eight workers 鈥 from Mexico, Guatemala, Honduras and El Salvador 鈥 were filling potholes on the bridge when it was hit by a huge cargo ship and collapsed in the middle of the night of March 26. Two men were rescued and the bodies of two others were recovered in subsequent days.

Authorities announced Friday evening that salvage divers had recovered, in the hours before Biden arrived, a third body from the water, that of Maynor Yasir Suazo-Sandoval, 38, one of the missing workers. They said the search for the other victims will continue.

The president also met for more than an hour with the families of those killed.

鈥淭he damage is devastating and our hearts are still breaking," Biden said.

Officials have established a for vessels involved in clearing debris. The Army Corps of Engineers hopes to open a limited-access channel for barge container ships and some vessels moving cars and farm equipment by the end of this month, and to restore normal capacity to Baltimore's port by May 31, the White House says.

That's important since longer delays in reopening shipping lanes could send . As much as $200 million in cargo normally moves through Baltimore鈥檚 port per day, and it is the leading hub for importing and exporting vehicles.

More than 50 salvage divers and 12 cranes are on site to help cut out sections of the bridge and remove them from the key waterway. Officials told Biden they had all the resources they need to meet the targets for opening the channel into the Baltimore port.

The president announced that some of the largest employers affected by the collapse, including Amazon, Home Depot and Domino Sugar, have committed to keeping their employees on payroll until the port is reopened. That followed days of outreach by state and federal officials to try to mitigate the economic impact.

鈥淔rom the air I saw the bridge that has been ripped apart," Biden said, "but here on the ground I see a community that鈥檚 pulled together.鈥

It is still unclear, though, how the costs of cleanup and building a new bridge will be covered.

The Federal Highway Administration in 鈥渜uick release鈥 emergency relief funds to get started. Exactly how much the collapse will ultimately cost is unclear, though some experts estimate recovery will take at .

Biden said within hours of the collapse that 鈥渢he federal government will pay for the entire cost of reconstructing that bridge, and I expect the Congress to support my effort.鈥

Senate Republican Leader Mitch McConnell likened the bridge collapse to assistance that flows after natural disasters and saying 鈥漷he federal government will step up and do the lion鈥檚 share鈥 of funding. But authorization could cause some squabbles in Congress.

The White House is asking lawmakers to authorize the federal government to cover 100% of the collapsed bridge cleanup and reconstruction costs, rather than seeking funding through a separate, emergency supplemental funding request.

In a letter to congressional leaders, Office of Management and Budget Director Shalanda Young noted similar techniques were used for recovery and rebuilding efforts that received bipartisan congressional support in 2007, when a highway bridge in downtown Minneapolis collapsed during evening rush hour, killing 13 people.

But some hard-line congressional Republicans are already lining up to demand politically controversial offsets for the funding. The conservative House Freedom Caucus issued a statement saying, 鈥淚f it proves necessary to appropriate taxpayer money to get one of America鈥檚 busiest ports back online, Congress should ensure it is fully offset and that burdensome regulations鈥 are waved. It was referring to potential federal spending cuts elsewhere and to regulations like the Endangered Species Act.

The caucus's letter also suggested that approval for bridge recovery funds be tied to the Biden administration agreeing to lift a pause it has imposed on exportation of liquified natural gas.

The funding questions only serve to heighten the collapse's political implications as Biden squares off with former President in November's election.

It's the second major disaster along the country鈥檚 busy northeastern hub in as many years. Last summer, an overpass along Interstate 95 in Philadelphia after a tanker truck slammed into it. Federal and state officials moved quickly on temporary repairs and ultimately reopened that section of the highway faster than expected.

But the cleanup and repairs in Baltimore will take far longer and be far more costly, making the chances it is a net political positive for Biden 鈥 especially in time for Election Day 鈥 far murkier. That hasn't stopped the Biden administration from championing anew a that cleared Congress in 2021.

The bridge collapse also has thrust into the national spotlight Maryland's Democratic , 45, a leading voice in Biden鈥檚 reelection campaign鈥檚 effort to energize young voters on the 81-year-old president鈥檚 behalf. The governor accompanied Biden on the helicopter tour and during his briefings.

Biden has traveled the country showcasing construction projects on highways, bridges and tunnels. In 2022, he arrived for an event in Pittsburgh just hours after a bridge . Promoting the public works package also has allowed the president to lean into his and many years commuting to and from Washington on Amtrak as a Delaware senator.

Biden said Friday that he鈥檇 been over the bridge 鈥渁bout a thousand times鈥 commuting from Washington to his home in Delaware, prompting the state Department of Transportation chief to quip, 鈥渢hank you for the tolls, sir.鈥

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Associated Press writer Lea Skene in Baltimore contributed to this report.

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