But it remains to be seen whether a tight-fisted Congress would go along with the kind of massive new spending the candidates are calling for.
"We will build the next generation of roads, bridges, railways, tunnels, sea ports and airports that our country deserves," Trump said in a speech Monday outlining his plan to boost the American economy. "American cars will travel the roads, American planes will connect our cities and American ships will patrol the seas."
Clinton has said she wants to commit $275 billion in public funds over five years, including $25 billion for a national infrastructure bank to generate another $225 billion in direct loans, loan guarantees and other forms of credit.
There's little doubt that the U.S. faces a major undertaking to upgrade basic infrastructure, and the repair bill is getting bigger.
That's the conclusion of the latest "report card" on American roads, bridges, airports, power grid and other critical infrastructure from the American Society of Civil Engineers.
Over the next decade, the group estimates, it would cost more than $3.3 trillion to keep up with repairs and replacements, but based on current funding levels, the nation will come up more than $1.4 trillion short, the group says. When projected to 2040, the shortfall is expected to top $5 trillion, unless new funds are allocated.