"They"?
In BobL's second link above you will see that "They" is the local transportation authority, not Governer Perry.
Additionally that second link accurately points out that there is much new constuction involved.
The whole point of creating the local/regional authorities was to put the decision making process in the hands of locals and not the state. It is consistent with the "Home Rule" part of the Texas Constitution. Plus, it prevents the metro areas from ganging up and forcing the cost of these local roads onto taxpayers statewide. You can see the same concept in the regional water boards.
One again, I am waiting for someone to document the mis-info that the guv is converting these roads.
They have to use speed traps for that instead.