In his bullish State of the Union address, President Joe Biden promised to press ahead with a slew of proposals ranging from policing reform to confronting China, and to "finish the job" on the economy.

One cornerstone of Biden's presidency is his Infrastructure Investment and Jobs Act (IIJA), signed into law in November 2021, which aims to give the US a much-needed upgrade. Focused on the country's physical infrastructure, the $1.2 trillion package is funding everything from roads and sewage to broadband and electric vehicle charging networks. 

Read on to find out what's in the super-ambitious plan.