Rockford & Freeport Interurban Railway
Reporting mark: R&F
R&I - Coolidge Creek Culvert (Winnebago County, Illinois)
Abandoned concrete culvert bridge over Coolidge Creek on Rockford & InterurbanAbandoned
R&I - Kishwaukee River Bridge (Winnebago County, Illinois)
Lost Deck plate girder bridge over Kishwaukee River on Rockford & InterurbanRemoved but not replaced
R&I - Pecatonica River Bridge (Stephenson County, Illinois)
Built 1904; Service ended September 30, 1930; Rails (and bridge) removed during the winter of 1931-32Lost Bridge over Pecatonica River on Rockford & Interurban RailwayRemoved