UP Wilson Creek Bridge #4


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Name UP Wilson Creek Bridge #4
Chicago & North Western Railway Bridge #333
Built By Chicago, St. Paul, Minneapolis & Omaha Railway
Currently Owned By Union Pacific Railroad
Superstructure Contractor Lassig Bridge & Iron Works of Chicago (Main Span)
Unknown (Approach Spans)
Substructure Contractor Unknown
Length 110 Feet Total, 50 Foot Main Span
Width 1 Track, Formerly 2 Tracks
Height Above Ground 15 Feet (Estimated)
Superstructure Design Deck Plate Girder and Steel Stringer
Substructure Design Concrete Pile
Date Built 1943, Using a Span Fabricated c. 1900
Original Location (Main Span) Unknown
Traffic Count 5 Trains/Day (Estimated)
Current Status In Use
Chicago & North Western Railway Bridge Number 333
Union Pacific Railroad Bridge Number 58.20
Significance Local Significance
Documentation Date 3/18/2019

In 1867, the West Wisconsin Railway (WW) constructed 10 miles of new railroad, extending from Tomah to Warrens, Wisconsin.  The following year, 21 additional miles would be completed to Black River Falls, Wisconsin; 34 additional miles were completed to Augusta, Wisconsin in 1869;  46 additional miles would be constructed to Eau Claire, Wisconsin in 1870, and 44 miles between Eau Claire and Hudson, Wisconsin completed in 1871.  In 1871, the St. Paul, Stillwater & Taylors Falls Railroad (StPS&T) completed 22 miles from St. Paul, Minnesota to Hudson in 1871.  During 1872, the WW completed 32 miles of additional railroad between Elroy and Warrens, Wisconsin; and the previous alignment between Tomah and Warrens would be abandoned.  The WW would be acquired by the Chicago, St. Paul & Minneapolis Railway in 1878, which was acquired by the Chicago, St. Paul, Minneapolis & Omaha Railway (Omaha Road) in 1880.  The StPS&T would be acquired by the St. Paul & Sioux City Railroad (StP&SC) in 1880, and the StP&SC would be purchased by the Omaha Road in 1881.  By acquiring this route, the Omaha Road had completed a mainline extending from Elroy, Wisconsin through St. Paul, Minnesota to Sioux City, Iowa. 

The first significant improvement to this line was a new bridge and alignment at Hudson, Wisconsin; completed in 1881.  At the same time, the Omaha Road was working to replace major bridges with new iron and stone structures.  In 1883, the Omaha Road would come under control of the Chicago & North Western Railway (C&NW).  The C&NW operated numerous routes throughout the Upper Midwest, and the Omaha Road served as a principal component of the system.  As traffic increased on this route, significant improvements would be made.  Realignments would be completed in 1885 near Augusta and Merrillan; between Millston and Warrens in 1886; between Baldwin and Hersey and Altoona and Fall Creek in 1891; between Hudson and Roberts in 1898, and between Hersey and Knapp and west of Millston in 1899.  Further realignments would occur in 1901, when a new cutoff around Black River Falls was completed.  In 1903, more improvements were made between Roberts and Hammond; around Woodville; west of Menomonie; west of Elk Mound and near Truax.  A second track was constructed between Augusta and Altoona in 1907.  In 1911 ans 1912, the remaining second track would be constructed from Wyeville to Menomonie, including realignments near Eau Claire and Menomonie.  The second track would be completed to St. Paul in 1913.  In 1915, the original alignment in Black River Falls would be abandoned.

In 1957, the C&NW leased the Omaha Road.  Between 1957 and 1962, most of the second track would be removed. In 1971, the Sheppard to Black River Falls spur would be abandoned.  By 1972, the Omaha Road was fully absorbed into the C&NW.  In 1986, the Levis to Black River Falls spur would be abandoned.  The Camp Douglas to Elroy segment would be abandoned in 1986, and purchased by Juneau County in 1972.  The Omaha Trail would open on the former railroad in 1992.  In 1992, the original alignment in Eau Claire would be abandoned.  In 1995, the C&NW would be purchased by Union Pacific Railroad.  Today, UP operates the Altoona Subdivision from St. Paul to Altoona; the Wyeville Subdivision from Altoona to Wyeville; and the Camp Douglas Industrial Lead from Wyeville to Camp Douglas.


Located along US Highway 12 east of Knapp, this deck plate girder bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway mainline across Wilson Creek. The first bridge at this location was likely a timber pile trestle, constructed when the line was built. It is likely that this bridge was replaced by an iron bridge in the 1890s. In 1912, the Omaha Road began a double tracking project, and would realign the railroad in this area. It is believed that the bridge was replaced with a new double track 50-foot deck plate girder that year. In September 1942, severe flooding destroyed the bridge, and it is believed a temporary bridge was constructed. A new double track bridge was rebuilt in 1943. The bridge consists of a 50-foot deck plate girder span, approached by a 30-foot steel stringer span on either end. The deck plate girder span uses a standard design, and appears to have been fabricated by the Lassig Bridge & Iron Works in approximately 1900. It is believed that this span was likely reused from an unknown location. The approach spans use a standard steel stringer design, and were fabricated by an unknown contractor. The entire bridge is set onto standard concrete pile substructures, which may have been constructed by either an unknown contractor or railroad company forces. Deck plate girder spans were commonly used by railroads, as they were durable and easy to construct. The northern track was removed in approximately 1962, and the spans may have been reused at other locations. Overall, the bridge appears to be in fair to good condition, with no significant deterioration noted. The author has ranked this bridge as being locally significant, due to the common design.


Citations

Build date Reconstruction after Fall 1942 flood
Builder (main span) Missing Lassig Bridge & Iron Works plaque
Railroad History Citation ICC Valuation Information, Compiled by Richard S. Steele

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