Texas Local Government Code - LOC GOV'T § 233.032. Powers and Duties of Commissioners Court

(1) establish by order building or set-back lines on the public roads, including major highways and roads, in the county; and

(2) prohibit the location of a new building within those building or set-back lines.

(1) more than 25 feet from the edge of the right-of-way on all public roads other than major highways and roads; or

(2) more than 50 feet from the edge of the right-of-way of major highways and roads.