When material shall have been furnished, or labor performed in the construction, repair, and equipment of any railroad, canal, bridge, viaduct or other similar improvement, such laborer and materialman, contractor, or subcontractor, shall have a lien therefor, and such lien therefor shall extend and attach to the erections, excavations, embankments, bridges, roadbed, and all land upon which the same may be situated, including the rolling stock thereto appertaining and belonging, all of which, including the right-of-way, shall constitute the excavation, erection or improvement provided for and mentioned in sections 52-115 to 52-117.