To make projects in certain counties eligible for funding under the rural surface transportation grant program, and for other purposes.

This bill amends the rural surface transportation grant program to expand eligibility for funding. It defines "covered counties" as those with annual agricultural production exceeding $1 billion (adjusted annually for inflation) and at least $500,000 per square mile. The bill requires 10% of annual program funds to be reserved specifically for "farm-to-market roads" located within these covered counties. The Secretary of Transportation, with input from the Secretary of Agriculture, must maintain an annual list of eligible counties meeting these agricultural thresholds.