South Bend, IN Mayor and U.S. presidential candidate Pete Buttigieg speaks to a crowd of over 850 people during his sixth visit to the Monadnock region in Keene, NH on Jan. 2, 2020.

Democratic presidential contender Pete Buttigieg unveiled $1 trillion infrastructure plan on Friday, pledging to direct federal funds to state and local governments to revitalize the nation's transport networks, clean the water supply and expand the broadband internet.

"Under my administration, local governments will finally have a partner in Washington," Buttigieg wrote in the plan. "As a former mayor, I know that priority-based budgets made locally are better than budget-based priorities set in Washington."

Buttigieg was the mayor of South Bend, Indiana, for eight years until his second term expired this month. He is polling in fourth place in national surveys of Democratic voters.

His campaign said the plan will be paid for by reforming the capital gains tax and repealing the 2017 GOP tax overhaul, reforms that had been previously disclosed. The campaign will also raise the estate tax, with a top rate of 65% for billionaires. The plan will create 6 million jobs, the campaign said.

"The bulk of the expense in the plan is already covered in our climate resiliency plan that was previously released," spokeswoman Tess Whittlesey said in an email.

The infrastructure plan includes the following:

$100 billion to establish a fund to address lead in water, paint and soil

$150 billion to improve public transportation, including $100 billion for states and cities to repair existing systems and expand their rail and bus services, and $12 billion for rural public transit

$80 billion to a school repair program, allocating grants and loans to states based on poverty levels

$80 billion to expand internet access to unserved and underserved communities

$165 billion into the Highway Trust Fund to ensure its solvency through 2029

President Donald Trump has made infrastructure a key priority, though his efforts have failed to gain traction.

A bipartisan infrastructure deal he championed last year fizzled as conservatives balked at the price tag. As a first-time candidate, Trump campaigned on spending $1 trillion over a decade for fixing the nation's aging infrastructure.

Buttigieg wrote in the plan that the Trump administration "has been incapable of keeping its promise to pass major infrastructure legislation, and critical projects around the country are stalled because of it."

"Meanwhile, our roads and bridges crumble, our schools fall into disrepair, water systems poison our children, and our flood protection systems fail as climate change accelerates," he wrote.