- 1854: 39 miles completed from Chicago to Cary, Illinois by the Illinois & Wisconsin Railroad
- 1855: I&W combined with Rock River Valley Union Railroad to form the Chicago, St. Paul and Fond du Lac Railroad
- 1855: 53 miles completed from Cary to Janesville, Wisconsin by the Chicago, St. Paul and Fond du Lac Railroad
- 1859: CStP&FdL sold to Chicago & North Western Railway
- 1882: Second track completed from Chicago to Mayfair (Montrose Avenue)
- 1884: Second track completed from Mayfair to Des Plaines
- 1886: 16 miles completed from Janesville to Evansville, Wisconsin by the Janesville and Evansville Railway
- 1887: J&E sold to the Chicago & North Western Railway
- 1893: Second track completed from Des Plaines to Barrington
- 1899: Second track completed from Barrington to west of Harvard, Illinois
- 1899: Second track completed from Shopiere to west of Janesville, Wisconsin
- 1899: Track elevation completed from Kostner Avenue to Sangamon Street in Chicago
- 1908: Second track completed at Rock River in Janesville, Wisconsin
- 1927: Track elevation completed from Kostner Avenue to Foster Avenue in Chicago
- 1995: Chicago & North Western purchased by Union Pacific Railroad
- 1984-Present: Metra operates the Union Pacific Northwest Line between Harvard and Chicago
- 1995-Present: Union Pacific operates the Harvard Subdivision from Chicago to Evansville, Wisconsin
06/16/22
Located along US-14 between Fox River Grove and Cary, this large truss bridge crosses the Fox River.
Built in 1898 to replace an older lattice truss bridge, the bridge features a pair of 8-panel riveted Warren Deck Trusses with alternating vertical members. The bridge sits on stone and concrete substructures.
Large deck trusses like this are not common on Chicago area railroads anymore. Many were replaced with deck girders prior to World War II.
Overall, the bridge appears to be in good condition, with no serious deterioration found.
The author has ranked the bridge as being moderately significant, due to the common design.
The picture above is an overview from the park.
Fox River Railroad Bridges
| Upstream | Fox Lake Rail Bridge (N) |
| Upstream | Fox Lake Rail Bridge (S) |
| Downstream | Algonquin Trail Bridge |