MassiveIndustry

Sponge Park, at the end of Second Street in Brooklyn, is designed to clean and filter thousands of gallons of storm water before they can enter the waterway.

Within a five-year, $300 billion measure are dozens of provisions providing new policies and consumer protections.

Her five-year, $275-billion proposal is aimed at creating middle-class jobs while investing in the country’s highways, airports and ports, the campaign said.

Mrs. Clinton will unveil the details of a $250 billion federal investment in infrastructure over five years paid for by overhauling the business tax code. The introduction will be the start of a monthlong focus on Mrs. Clinton’s “jobs agenda,”...