- 1836: Galena and Chicago Union Railroad charted between Chicago and Galena, Illinois
- 1848: 10 miles completed from Chicago to Oak Park, Illinois by the Galena and Chicago Union Railroad
- 1849: 20 miles completed from Oak Park to West Chicago, Illinois by the Galena and Chicago Union Railroad
- 1854: 68 miles completed from West Chicago to Dixon, Illinois by the Galena and Chicago Union Railroad
- 1855: 39 miles completed from Dixon to East Clinton, Illinois by the Galena and Chicago Union Railroad
- 1855: 10 miles double tracked from Chicago to Oak Park
- 1856: 20 miles double tracked from Oak Park to West Chicago
- 1864: G&CU consolidated with the Chicago & North Western Railway
- 1884: 15 miles double tracked from West Chicago to Elburn
- 1889: Remainder of line double tracked from Elburn to East Clinton
- 1893-95: Track elevated from Sacramento Boulevard to 40th Street (Pulaski Road)
- 1905: Track elevated from Ashland Avenue to Sacramento Boulevard
- 1908-13: Track elevated from Pulaski Road to Thatcher Avenue River Forest and additional tracks built
- 1909-11: Track realigned, elevated and expanded for new Chicago Terminal
- 1910: 13 mile bypass of Dixon completed by the Lee County Railway Company
- 1910: C&NW purchases the Lee County Railway Company
- 1995: Chicago & North Western purchased by Union Pacific Railroad
- 1995-Present: Union Pacific operates the Geneva Subdivision from Chicago to East Clinton
- 2006-Present: Metra operates the Union Pacific West Line between Elburn and Chicago
06/26/21
Located at the former intersection of West Carroll Avenue and N. Clinton Street in the Near West Side neighborhood, this large viaduct crosses the former Milwaukee Road mainline, now Canadian Pacific.
Built in 1910 as the C&NW built a new station, the bridge is one of the simpler structures in the area. The bridge consists of a large through plate girder spans, as well as one concrete encased beam span on the north and three on the south. The bridge also sits on concrete and steel substructures.
Like some of the other bridges in the area, the original concrete fascia has been removed, likely due to failure. Only one span continues to retain the outer face.
The bridge also consists of a ballasted deck. As one of the largest rail junctions in Chicago lies north of this bridge, the bridge is six tracks wide, and all are in use.
Overall, the bridge appears to be in fair condition. Because of the railroad ownership, proper inspection of conditions of this bridge could not be completed.
The author has ranked the bridge as being locally significant, due to the common design.
The photo above is an overview.