The other day I and a friend of mine went in her car from Saginaw to Westlake, taking the hopefully speedy route up I-35 to 170, east on 170 to 114 and then further east to Westlake. It's been a few years since I've been in this area, and I trusted it would be a speedy trek. No. The highway construction is still ongoing, and that meant the usual traffic congestion headache. I'm guessing 170 will finally be completed no sooner than 2035! Far north I-35W is not much better.
Incidentally, we got a chance to see how much commercial and industrial development is occurring in the Alliance area along 170. Very impressive. If it keeps growing it will rival Plano.