From the record
“The Mueller Bridge near La Vernia, Texas, also known as Bridge at McAlister Crossing, is a Warren polygonal chord truss bridge that was built in 1915. It was built by the Alamo Construction Co.”
Wikipedia article Mueller Bridge, CC BY-SA 4.0.
One of 4 National Register listings published here for Wilson County · listed in 2007 · category: Structure · built in 1915.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service