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The Only Chart You Need to Explain America's Broken Gas Tax

Highway money is on pace to run out in July.
relates to The Only Chart You Need to Explain America's Broken Gas Tax

The Congressional Budget Office has released a status update on the Highway Trust Fund that pays for America's roads and part of its transit network. Prognosis? Negative. The gas tax that helps populate the fund has lost most of its purchasing power thanks to a combination of political stagnation (it's gone unchanged since 1993), increased fuel-efficiency, and soaring construction costs.

CBO sums up the grim situation best in a single chart: