Tex. Transportation Code § 313.001: DEFINITIONS.

In this chapter:

(1) "Cost" includes an expense of engineering and other expense incident to construction of an improvement.

(2) "Governing body" means the governing body of a municipality.

(3) "Highway" includes any part of a street, alley, public place, or square, including a part left wholly or partly unimproved in connection with another street improvement.

(4) "Improvement" includes the following, liberally construed:

(A) filling, grading, raising, paving, or repairing a highway in a permanent manner;

(B) constructing, realigning, or repairing a curb, gutter, or sidewalk;

(C) widening, narrowing, or straightening a highway; and

(D) an appurtenance or incidental to an improvement, including a drain or culvert.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.