It's certainly a flax. You say 'down the road' as if this might be in a location where people have been active rather than a really wild place. Could it possibly be a stray plant of common flax, Linum usitatissimum, which is a crop grown in Texas according a quick Google. Just a thought.

This weedy thing can really self-sow with abandon if you have it in or near your yard, and can take over if you let it go to seed. It is able to grow with virtually no summer water, and will germinate even in the middle of summer. My advice would be to eliminate it before it takes over, if you have it in your garden. The long tap root is very deep, and will resprout if not completely removed.

Possibly whitlow grass.

Should mention, dianthus and Dame's Rocket are not native plants; they are garden escapes if you find them growing in the wild. Dame's Rocket will seed around aggressively.