Westgaard Bridge
The Westgaard Bridge, also known as Souris River Bridge, near Voltaire, [North Dakota] is a Pratt [pony truss] through structure that was built in 1902 to cross the Souris River. It was listed on the National [Register of Historic Places] in 1997.
It is the oldest documented bridge in McHenry [County, North Dakota|McHenry County].