Sec. 312.001. DEFINITIONS. In this subchapter and in Subchapters B and C: (1) "Highway" includes all or any part of a street, alley, or public place or square that is dedicated to public use. (2) "Improvement" means the: (A) filling, grading, raising, or paving of a highway in a permanent manner; (B) widening, narrowing, or straightening of a highway; (C) constructing of a gutter, curb, or sidewalk; or (D) constructing of necessary appurtenances to a highway, including sewers and drains. (3) "Railway" includes a street railway. Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.