Chicago, St. Paul & Fond du Lac Railroad

Reporting mark: CStP&FdL

UP - South Street Arch (McHenry County, Illinois)
Built 1867 by Chicago, St. Paul and Fond du Lac Railroad; Purchased by C&NW, widened 1897 to accomodate a second track
Stone arch bridge over South Street on UPRR / METRA Harvard Subdivision
Open to traffic