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IAIS Green River Bridge

Quadrangular Through Truss Bridge over Green River
Colona, Henry County, Illinois

Click the Photo Above to See All Photos of This Bridge!
Name IAIS Green River Bridge
Built By Chicago, Rock Island & Pacific Railroad
Contractor Unknown
Currently Owned By Iowa Interstate Railroad
Length 340 Feet Total, 155 Foot Main Span
Width 2 Tracks, 1 In Use
Height Above Ground 20 Feet (Estimated)
Superstructure Type Quadrangular Through Truss and Deck Girder
Substructure Type Concrete
Date Built 1900
Traffic Count 5 Trains/Day (Estimated)
Current Status In Use
RI Bridge Number 1693
Significance Moderate Significance
Documentation Date March 2015
In 1852, the Chicago & Rock Island Railroad began construction of a line heading southwest from Chicago, towards Joliet; a distance of 40 miles. The line crossed through junctions that would eventually become major in Chicago, including Blue Island and Englewood.

In 1853, the line was extended another 119 Miles to Geneseo, about 20 miles from the Mississippi River. This section crossed the Des Plaines River at Joliet and Fox River at Ottawa, and followed the Illinois River.
The remaining section of line was built in 1854, and went up to the Mississippi River.

The first railroad to reach west of the Mississippi was this one, as a swing bridge was built to cross the Mississippi in 1856.
However, the bridge became infamous for an accident in which the bridge collapsed after being struck by a boat. The lawyer who defended the young railroad? Abraham Lincoln, who would eventually become 16th president of the country.

The railroad renamed in 1880 to the Chicago, Rock Island & Pacific Railway, also known as the Rock Island.

The railroad operated this line heavily, extending it through Iowa towards Nebraska and the pacific. The line was the backbone of the railroad.

However, despite the seemed success of the railroad, it eventually began to fail. By 1980, the railroad fell to bankruptcy and abandoned all their property.

This line was purchased by the Iowa Interstate Railroad west of Ottawa, and CSX Railroad east of Ottawa to Joliet. Metra currently uses the Chicago to Joliet portion, for their Rock Island District.
Today, much of the line has been upgraded from the poor conditions it was at in 1980. It is operated as the CSX New Rock Subdivision east of Ottawa to Joliet.
West of Ottawa to Davenport, it is operated as the 1st Subdivision of the Iowa Interstate Railroad.
07/17/21


Located in Colona, this bridge crosses the Green River using a large truss span.
Built in approximately 1900, the bridge features a large riveted Quadrangular Through Truss, with an X-Frame portal bracing. The bridge is approached by four deck girder spans on the west side, and is supported by concrete substructures.
While the bridge was built for two tracks, only one track remains in use. The bridge is visible from I-80.
The Quadrangular design was commonly used for Rock Island structures until approximately 1900, when Warren trusses became more popular. On a national scale, this design is uncommon, although several railroads extensively used it due to the resilience to damage.
Overall, the bridge appears to be in good condition. Little major deterioration was noted on the bridge.

The author has ranked the bridge as being moderately significant, due to the truss design.
The photo above is an overview.

Citations

Source Type

Source

Build Date Based on double tracking of line
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele



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