This standard I-Beam bridge is the eastern crossing of South Dakota Highway 105 in North Sioux City.
Built in 1931, this structure and and its neighbor both consist of the same design, featuring an I-Beam with trestle approaches.
The entire bridge rests on wooden substructures.
Overall, the bridge remains in good condition. It appears that one of the I-Beams was replaced, likely after a truck strike.
The author has ranked the bridge as being minimally significant, due to the common design and newer age.
The photo above is an overview. The bridge is easily accessed from the road it crosses.