Too bad the local toll road things aren't doing what they were supposed to (ie take traffic off I35), but it did keep a lot of local A&M engineers employed for awhile. Built by a foreign conglomerat too, iirc.
It should be safe at 85, not likely to be much traffic other than other hotrodders....
".... I have always found that plans are useless, but planning is indispensable." - Dwight D Eisenhower