President Bush surveyed Minneapolis’ collapsed highway bridge from the ground and air Saturday, viewing the concrete slabs and twisted steel that once spanned the Mississippi River. He pledged to help cut the red tape to reconstruct the span.

“Our message to the Twin Cities is we want to get this bridge rebuilt as quick as possible,” Bush said after visiting with rescue workers and people who watched the bridge crumble. “We understand that this is a main artery of life here.”

Still criticized for his administration’s sluggish response to Hurricane Katrina, Bush hurried to Minnesota soon after the I-35W bridge buckled on Wednesday. The collapse sent dozens of cars sliding in the Mississippi River, killing at least five people and injuring about 100 others.

He said he could not promise how quickly the bridge could be rebuilt, but said his transportation chief, Mary Peters, will take charge of the project to replace the eight-lane I-35W bridge that once carried 141,000 vehicles a day.

“I do promise that she’s going to listen to the local authorities to find out what the folks here need,” Bush said. “I do promise that when she sees roadblocks and hurdles in the way to getting the job done she’ll do everything she can to eliminate them.”

Bush spoke of “a lot of paperwork involved with government, and one of our jobs is to work with the governor and the mayor and the senators and the members of the Congress to cut through that paperwork. And to see if we can’t get this bridge rebuilt in a way that not only expedites the flow of traffic but in a way that can stand the test of time.”

The president said that after seeing the disaster site, he came away with the belief that “not only are they committed to a better life — not only are they committed to turning something ugly into something good — but it’s going to happen.”

His Marine One helicopter circled and hovered over the site during a 10-minute tour, allowing him to gaze down upon the muddy waters where some bodies are trapped. He saw pieces of the highway littered with vehicles, including a school bus hugging a guard rail. Rescue boats below helped in the search for victims.

“We talked about the specifics, about what we know about how the bridge fell and how we’re going to rebuild it,” said Minneapolis Mayor R.T. Rybak.

Later, Bush put on a hard hat and walked around the disaster site. Yards from the school bus, he stood with Gary Babineau, 24, of Blaine, Minn., a construction worker who helped bring the school bus children to safety after the collapse.

“When it fell, I saw the whole bridge fall in front of me, just disappear,” said Babineau, who was in a pickup truck on his way home from work when the span buckled. “All the cars disappeared. I had a free fall and just landed incredibly hard — thought my back might have been broken.”

His truck fell about 30 feet, but did not go into the water.

Despite his ordeal, Babineau assigned no blame.

“I think if someone did not think it was safe to drive on I think they would have come forward and if they didn’t, you know, shame on you. These things do happen. I don’t think it’s anyone’s fault,” Babineau said. After walking around the site, Bush went to a makeshift command post where he spoke with the families of two victims, as well as first responders and rescue workers.

The president praised rescuers and investigators “who are working as hard as they possibly can to save life and to find life, to go under these murky waters to find the facts. And it’s going to take a while.”

In Washington, Congress sought to direct $250 million to rebuild the bridge. A final vote was needed in the House on Saturday, but Congress would have to appropriate the money in future legislation. Federal transportation officials have announced plans to investigate the agency responsible for inspecting highway bridges.

The administration’s reaction to any disaster is inevitably compared with its slow response to Katrina, which devastated the Gulf Coast in August 2005.