From the record
“The Antelope Hill Highway Bridge is a historic bridge over the Gila River in Tacna, Arizona, U.S. It was built between 1914 and 1915 as a ten-span concrete girder bridge.”
Wikipedia article Antelope Hill Highway Bridge, CC BY-SA 4.0.
One of 58 National Register listings published here for Yuma County · listed in 1979 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service