Senate Republicans may sink a vote on a bipartisan infrastructure bill.

They do not want to get the country back on it’s feet when they worked so hard to destroy it.

Senate Democrats are set to force a procedural vote on Wednesday on a nearly $600 billion bipartisan agreement to address the nation’s aging roads, bridges and other infrastructure projects, a maneuver that is expected to fail amid Republican opposition.

Senator Chuck Schumer, Democrat of New York and the majority leader, opted to plan for the vote even though the bill was unfinished and negotiators were still haggling over key details, arguing that it was worth moving forward with the first step in the lengthy legislative process before the scheduled August recess.

In floor remarks on Tuesday, he sought to assuage concerns that he was undercutting the talks, describing the vote as “an honest attempt to get something done, to get the ball rolling on the Senate floor.”

But Republicans warned on Tuesday that they would block the move en masse without more details about the legislation, as their negotiators pushed for a few more days to complete an agreement and circulate it among their colleagues.

“I think there are a number of Republicans that want to be for an infrastructure bill, who are waiting for this process to conclude in hopes that it will be something that they can vote for,” said Senator John Thune of South Dakota, the No. 2 Senate Republican. The negotiators, he said, “feel like they’re in a good place, but they’re not done yet, which is why I think it’s a mistake for Schumer to try and rush this.”

In the month since President Biden and a core bipartisan group of 10 senators announced a deal on a framework, haggling has focused on how to structure and finance the legislation. After a marathon of hourslong virtual meetings Sunday and Monday, the group met twice on Tuesday to continue hammering out the details of the bill.

“I think people basically have an objection to voting for something that they don’t know what they’re voting for,” Senator Bill Cassidy, Republican of Louisiana, said as he entered a 7:15 p.m. meeting in the Capitol. “There’s something about having something to look at — a piece of paper with stuff written on it — that gives people comfort to support.”

It is unclear what will happen to the legislation if the procedural motion fails, as expected. Mr. Schumer could bring up the motion again at a later date, but he has not said whether he would do so.

The legislation is an integral part of Mr. Biden’s $4 trillion economic agenda, as Democrats hope to pair it with a $3.5 trillion package to fund new investments in health care, paid leave for workers, climate change provisions and other priorities. Unlike the infrastructure bill, Democrats expect to get that second measure to the president’s desk without the support of any Republicans.