Muddy Creek Bridge Maryland and Pennsylvania Railroad - The Muddy Creek Bridge Maryland and Pennsylvania Railroad is a historic Pratt through truss railroad bridge in Lower Chanceford Township and Peach Bottom Township York County Pennsylvania. It was built about 1909 and measures about 120-foot-long (37 m) overall. It was built by the Maryland and Pennsylvania Railroad and crosses Muddy Creek.It was added to the National Register of Historic Places in 1995. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Building