From the record
“Spencerville Covered Bridge is a historic covered bridge located at Spencerville, Indiana. It is a Smith Type 4 truss bridge on concrete piers.”
Wikipedia article Spencerville Covered Bridge, CC BY-SA 4.0.
One of 29 National Register listings published here for DeKalb County · listed in 1981 · category: Building · built in 1873.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service