The invention of the steam locomotive also gave impetus to bridge building and design. The most convenient rail routes often stretched across a wide channel or a deep chasm.
रेलगाड़ी के लिए जो रास्ता सबसे सुविधाजनक था, उस रास्ते में अकसर बड़ी - बड़ी घाटियाँ या गहरी खाइयाँ पड़ती थीं ।