A couple of weeks back we came from Amarillo on Hwy 287 to Ft. Worth and got on Interstate 20 and then east to Shreveport. Then Interstate 49 south to jump on Interstate 10. Not any noticeable construction on those roads. Only problem area we found was in getting through Baton Rouge on 10, a major stop and go situation, as traffic was backed up for a mile or more west of the Mississippi River bridge.
I 20 stays far enough south of both Dallas and Ft Worth to keep the traffic sane most of the time. We go through there a couple of times a year and never have had a problem. The roads in Texas are just well maintained for the most part. Hard to find a bad highway in that state.