Short of that, let's prohibit any federal subsidies to any jurisdictions that are above the national median in income.
The DC metro area is very affluent. Like most other parts of American, however, its political establishment has been conditioned for generations to expect federal funding for any project of significant size. That's a hard habit to break, regardless of where you live.
I tend to agree. States can fund their own stretches of interstate highway.
As a transition, Congress could approve the transportation freedom bill, which leaves most transportation decisions to the states and drops the gas tax to 3.7 cents per gallon, used only for interstate highways. The states fund the rest.