They arent required to do any such thing, they do what will benefit there casinos. Roads, interchanges, improved access. And yes, they "help" pay. Thackerville interchange at MM 1 was a $40 mil. project, they gave ODOT 16 mil. They made that back in 4 days from that casino...yep, $4 mil per day of TX money coming in. I learned this attending meetings down there with the tribe. I did the early conceptual design of that interchange.I’m pretty sure the original contract required a certain percentage of the profits had to be put back into the local infrastructure.
Around Ponca where there are 9 casinos, the tribes have cost shared with the city and county to replace bridges, resurface roads and so on which is also a benefit to the state beyond a percentage of the profit in taxes.