Name | CN I-88 Bridge (Hillside) |
Built By | Illinois Central Railroad |
Currently Owned By | Canadian National Railway |
Superstructure Contractor | Unknown |
Substructure Contractor | Unknown |
Length | 390 Feet, 125 Foot Largest Span |
Width | 1 Track |
Height Above Ground | 20 Feet (Estimated) |
Superstructure Design | Through Plate Girder |
Substructure Design | Concrete |
Date Built | 1952, Extended 2000 |
Traffic Count | 10 Trains/Day (Estimated) |
Current Status | In Use |
Significance | Local Significance |
Documentation Date | 11/26/2022 |
In 1851, the State of Illinois authorized the construction of a series
of railroad lines, extending from Cairo, Illinois; located on the Ohio
River, to the Mississippi River at East Dubuque, Illinois and to
Chicago, Illinois. The State awarded the Illinois Central Railroad (IC) with the land necessary
to construct the new lines. Surveys began in 1851, and the first
segments were completed by 1853. The northwestern section connected Freeport, Illinois to East Dubuque, Illinois. Construction was completed on this segment in 1855, and the line would later be extended across Iowa with a bridge over the Mississippi River to Dubuque in 1868. In 1890, the Chicago, Madison & Northern Railroad (CM&N), a subsidiary of the IC, constructed 102 miles of new railroad between Chicago and Freeport, Illinois; linking Chicago with the IC lines in northern Illinois. This served as an important connection for the IC, improving access to Chicago for the railroad. Due to heavy use, the section from Chicago to Broadview would be double tracked by 1895. The CM&N would be operated under lease by the IC until 1903, when it was consolidated into the IC. In the 20th Century, the IC was a respected railroad, operating an extensive railroad network through the central United States. This line served as a mainline for the IC, connecting lines in Iowa to Chicago. In 1972, the IC merged with the Gulf, Mobile & Ohio Railroad
(GM&O) to form the Illinois Central Gulf (ICG). This line, as well as the entire IC system in Iowa, was sold to the Chicago Central & Pacific Railroad (CC&P) in 1995. In 1988, the ICG
was reorganized as the Illinois Central Railroad (IC). In 1995, the CC&P was repurchased by IC and in 1998, IC was
purchased by the Canadian National Railway (CN). Today, CN operates the Freeport Subdivision between Broadview and Freeport, and the portion between Freeport and Dubuque is part of the Dubuque Subdivision.
Located near the busy junction of Interstates 88, 290 and 294, this through plate girder bridge carries the former Illinois Central over Interstate 88. Originally built in 1952 to cross a stub of the newly constructed Congress Expressway, the bridge consisted of two 70-foot through plate girder spans and two 35-foot through plate girder spans, set onto concrete substructures. The first segment of the expressway opened in 1955, and by 1958 the East-West Tollway would cross underneath. In 2000, the bridge would be extended with a 55-foot and a 125-foot span on the east end to cross a new feeder ramp, giving the bridge its current configuration. The girder spans are skewed, and utilize a typical floor system for the era, consisting of parallel floorbeams. The 1952-era girder spans use rivets, while the 2000-era spans use bolts. During the extension, the original east abutment of the bridge was reused as a pier, and a mound of earth left between the old and new structures. Overall, the bridge appears to be in good condition, with no significant deterioration noted. The author has ranked the bridge as being locally significant, due to the common design and newer age.
Citations
Build date | National Bridge Inventory (NBI) |
Railroad History Citation | ICC Valuation Information, Compiled by Richard S. Steele |