Representatives from the Missouri Department of Transportation (MoDOT) often warn that without more money, be it from a transportation sales tax or elsewhere, Missouri will not be able to match federal dollars for highways. Essentially, they are saying that if the state does not raise more money, it will leave eight to 10 times that amount in federal dollars on the table. However, these statements fail to clarify that: 1.) the federal dollars going to Missouri are limited, and 2.) the amount Missouri needs to match those funds is nowhere near $534,000,000 per year (the annual amount Amendment 7 would raise).
Federal dollars for highway improvements is a fixed amount that comes for the federal Highway Trust Fund, which the federal fuel taxes mainly support. The amount that Missouri currently receives is fixed by federal obligation limitations and the proportion that the state received in the past. State lane mileage and vehicle activity mostly determined the portion the state received in the past. Simply put, the amount of money available for state highway projects is mostly fixed, and currently, Missouri does not leave any money on the table. If Missouri decided to spend an extra billion dollars this year, it is unlikely that federal money to the state would increase.
According to MoDOT’s cautious projections, in which the federal government reduces its support to Missouri, the state will begin failing to match federal funds in 2020, leaving $186 million on the table. But to meet that match (of 80 percent federal, 20 percent state) Missouri would only have to increase local revenue by just less than $50 million, nowhere near the current $534 million proposal.
If we assume that the federal government fixes the federal highway funding problems and support does not decrease, the problem of matching funds is larger. By 2022, Missouri would be leaving about $530 million of federal dollars unmatched. However, under that scenario, Missouri would only have to increase local revenue by $130 million per year to get that money.
When it comes to federal dollars, unless there are major policy changes in Washington, the amount Missouri could get for the highways is relatively fixed whether or not Missouri raises taxes. While Missouri may lose the ability to match those dollars in the future, Missouri will eventually need to raise annually between only $50 million and $130 million. If Amendment 7 passes, the federal government will not make it rain; if the amendment fails, the sky is not going to fall.