I totally disagree. One can argue that free federal highways are problematic (car/truck and oil-dependent transportation), but given they exist, it is totally l

I totally disagree. One can argue that free federal highways are problematic (car/truck and oil-dependent transportation), but given they exist, it is totally logical and consistent to not allow funneling drivers onto toll-roads. Otherwise, states and corporate entities would build toll roads in strategic locations to capture the highway traffic in a way that makes it difficult to avoid. Then the money spent on free highways is not effective, because the toll roads capture the travel budgets and reduce the usage and utility of the free-to-use highways. If that law didn't exist at the time, I could totally see local politicians and their federal representatives colluding to put revenue-generating toll road segments into the federal highways. I'm not sure why the law was later removed, but maybe once a critical network of free roads was established, it made sense to allow toll road connections for other local highways the feds didn't want to pay for.