OpenStreetMap
After a year and a half, all Texas state routes have been checked, realigned, tagged, ref'd, and have added a relation to each one. Hopefully the tagging is reasonably consistent with each Highway, but things have been changed afterwards. If you find any highway in Texas (not including Farm to market roads), that doesn't have a relation, let me know so I can fix it. I would check myself, but can't figure out a way to do that.
-Jason
Discussion
Comment from AndrewBuck on 22 August 2011 at 19:14
Excellent work. You are welcome to pop over to North Dakota and do our highways next if you want. ;)
-Buck
Comment from JoshD on 22 August 2011 at 23:39
Great work!
Comment from Baloo Uriza on 23 August 2011 at 07:00
Are we talking /just/ TX routes, or are we including NASA, Rec Road, Loop, Toll and Spur as well?
Comment from 25or6to4 on 23 August 2011 at 11:15
In this case, this is for the primary state highways. I had already previously completed the Interstates and US Routes, and all the Loops and Spurs and other minor state routes, so this *should* cover most of the state!