Another inefficient Texas toll road is the Katy freeway. After expanding this massive road to 26 lanes, it caused an even bigger slow down during rush hour commutes.
On average, an extra 50 minutes was added to the freeway drivers’ daily commute; ultimately wasting (over) 25 million hours of commuter time a year.(source)
This is a form of induced demand. Basically if the amount of roads increase then traffic will equally increase.