Texas Natural Resources Code - NAT RES § 11.072. Fences With and Without Gates

(a) A person who has used any of the pasture land by joining fences or otherwise and who builds or maintains more than three miles lineal measure of fences running in the same general direction without a gate in it shall be fined not less than $200 nor more than $1,000.

(b) The gate in the fence described in Subsection (a) of this section shall be at least 10 feet wide and shall not be locked or kept closed so that it obstructs free ingress or egress.

(c) The provisions of this section do not apply to persons who have previously settled on land not their own, if the enclosure is 200 acres or less and if the principal pursuit of the person on the land is agriculture.