“Improvement” means the acquisition, construction, installation, or maintenance of any tangible property with an estimated useful life of five years or more including, but not limited to, the following:
(b) Benches, booths, kiosks, display cases, pedestrian shelters and signs.
(c) Trash receptacles and public restrooms.
(d) Lighting and heating facilities.
(i) Closing, opening, widening, or narrowing of existing streets.
(j) Facilities or equipment, or both, to enhance security of persons and property within the area.
(k) Ramps, sidewalks, plazas, and pedestrian malls.
(l) Rehabilitation or removal of existing structures.