Bridge collapse: Temporary channel opens for boats working on response

The Coast Guard said it is suspending the search and rescue efforts as of 7:30 p.m. Tuesday for the six missing individuals after the bridge collapse.

"Based on the length of time that we've gone in the search, the extensive search efforts that we put into it, the water temperature -- at this point, we do not believe that we're going to find any of these individuals still alive," Rear Admiral Shannon Gilreath told reporters.

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Baltimore bridge collapse: Search and rescue efforts suspended, Coast Guard says

The Coast Guard announced Tuesday night the suspension of the search and rescue efforts for six people who went missing after a container ship struck Baltimore's Francis Scott Key Bridge.

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The conditions in the water, including low water temperatures and unpredictable currents, have made it dangerous for first responders, authorities said.

Authorities said they plan to conduct recovery efforts starting at 6 a.m. on Wednesday.

"We're hoping to put divers in the water and begin a more detailed search to do our very best to recover those six missing people," Col. Roland Butler with the Maryland State Police said.

Carnival is temporarily moving its Baltimore operations to Norfolk, Virginia, amid the rescue and remediation efforts following the bridge collapse, the cruise line said Tuesday.

"Our thoughts remain with the impacted families and first responders in Baltimore," Christine Duffy, president of Carnival Cruise Line, said in a statement. "We appreciate the pledge made by President Biden today to dedicate all available resources to reopen Baltimore Harbor to marine traffic as soon as possible. As those plans are finalized, we will update our future cruise guests on when we will return home to Baltimore, but in the meantime, we appreciate the quick response and support from officials in Norfolk."

The move impacts the Carnival Legend ship, which is scheduled to return from its current voyage on Sunday, the company said. The cruise will return to Norfolk with free bus service back to Baltimore, Carnival said.

The regional office of the Environmental Protection Agency is on standby to respond to the aftermath of the bridge collapse if needed but is not aware of any environmental concerns at this time, according to EPA Mid-Atlantic Public Affairs spokesman Shaun Egan.

Synergy Marine Group said Tuesday morning that there was no pollution from the ship.

The Coast Guard is the primary federal agency responding and they have not asked for EPA assistance. Coast Guard pollution responders were sent to the scene, and if any releases of fuel or other pollutants are detected, the EPA official said the agency is ready to support that response.

The Maryland Department of the Environment said it is "conducting water sampling upriver and downriver of the site."

-ABC News’ Stephanie Ebbs and Beatrice Peterson

Vice President Kamala Harris said she is "praying for the families of those who are missing and all those who have been touched by this tragedy."

"I spoke with the governor of Maryland this morning, and we have directed the federal government to use all the resources that are available to assist with the search and rescue, to reopen the port and to rebuild the bridge as quickly as possible," Harris said while making a joint appearance with President Joe Biden at an event in North Carolina.

-ABC News’ Libby Cathey and Justin Ryan Gomez