Senators from both parties and the government have agreed on an infrastructure package worth 550 billion US dollars, according to the White House.
The agreement in principle was preceded by weeks of tough negotiations.
The Senate and the House of Representatives still have to approve the final package.
In the Senate, where President Joe Biden's Democrats depend on the support of some Republicans, there could be a first procedural vote on Wednesday.
The package includes "new federal government investment in America's infrastructure" and will create millions of jobs, the White House said.
It is "the most significant long-term investment in our infrastructure and competitiveness in almost a century," Biden said in a statement.
Expansion of the charging stations for electric cars
Around 110 billion dollars are to flow into the expansion or renovation of roads and bridges over five years.
Almost $ 40 billion will flow into the expansion of local public transport, and another $ 66 billion to the Amtrak railroad company.
Funds are also earmarked for expanding the charging stations for electric cars and for promoting electric buses.
A total of $ 42 billion is earmarked for ports and airports.
The package is also intended to finance the expansion of high-speed Internet connections and the improvement of the water supply, including the replacement of all lead pipes.
A good 70 billion dollars are also to flow into the modernization of the electricity infrastructure.
The specific counter-financing and the duration of the package sounded a bit vague in the White House's communication.
The measures would be financed by reallocating unused funds from the last economic stimulus package, targeted fees for companies and stronger crackdown on tax evasion, it said.