I can't say about the improvements, becuase I stopped traveling that route 4 - 5 years ago. I felt that it was about the roughest stretch of highway I have ever been on, from Sherman to Pryor, and it meant going through DFW. We travelled that route two time each year, going to a race north of Springfield, MO. We discovered a western route up 281 all the way to Jacksboro. It gets you around DFW and OKC. Let me know if you want, and I will give you the entire route.
Scotty and Kristen, Airedales Dagny and Wyatt
2007 Newmar Mountain Aire 4528, 450 HP ISM, Allison 4000, 8 Trojan T-105's
2014 F150 4x4 Crew Cab Platinum 157" WB
Roadmaster Blackhawk 2, RVI2 Brake System