Imagine you’re driving. Maybe on the Kennedy Expressway in Chicago, or down Interstate 95 through New Haven, or I-94 in Milwaukee. Chances are you’ll encounter a truck-swallowing pothole, or lanes strewn with orange cones, or traffic at a standstill. After all, Illinois, Connecticut, and Wisconsin have the worst roads in the nation. And the Highway Trust Fund — the source for most federal spending on roads, bridges, highways, tunnels, and public transit — is almost out of money. Again.