The District’s road construction fund is projected to run deep in the red within two years, possibly forcing the city to delay or postpone projects unless new sources of revenue are found, a new report finds.

The Highway Trust Fund, a pot used exclusively to match federal road construction grants, faces estimated deficits of $7.8 million in 2011, $14 million in 2012 and $15.5 million in 2013, the D.C. inspector general concluded in an annual review.