grate northen railway underpasses

uttari dakota key stanley mein grate northen railway underpasses ack concreet deck girder pull haye jise 1937 mein banaaya gayaa thaa. yeh aitihaasik sthaanon key rashtriya register mein soochibaddh haye.
isake namankan key anusaar, pull "ack thhos upa-sanrachana key saath ack bhaari-nirmit ekal-spain steel stringer design haye. iss design kaa upayog aam taur parr 1930 key dashak mein shuru hue rail lines key tahat uttar dakota sadak maargon koo leey jaane key liye banaai gaee kaee sanrachanaon mein kiya gayaa thaa."

