The rest of the new revenues will pay for improvements to other interstate highways, based on how much truck travel they carry. That includes the Interstate 95 corridor, already undergoing major highway and rail improvements north of Fredericksburg, and Interstate 64, which ultimately would receive about $28 million a year that could be used to widen the highway east of Richmond.

The package also includes more than $20 million a year for the Northern Virginia Transportation Authority to partly compensate for the loss of regional funds to pay for Virginia’s $154 million annual contribution to rebuilding the Washington Metro transit system.

Most of the new revenues will come from increased registration fees for trucks, based on their weight and wear on roadways, as well as higher taxes on diesel fuel, at the pump and through a North American compact that reimburses states for interstate truck travel.

The road tax will increase by 10 cents per gallon in two phases — one on July 1 and another a year later. In mid-2021, the tax on diesel fuel at the pump will rise by 6.8 cents per gallon.

I-81 handles 41 percent of interstate truck travel in Virginia, so it will receive the biggest share of the revenue from higher truck fees and diesel taxes.