UP County B Bridge


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Name UP County B Bridge
Chicago & North Western Railway Bridge #170
Built By Chicago, St. Paul, Minneapolis & Omaha Railway
Currently Owned By Union Pacific Railroad
Superstructure Contractor American Bridge Company of New York (Lassig Plant) (South Track)
Unknown (North Track)
Substructure Contractor Unknown (North Track)
Unknown (South Track)
Length 50 Feet Total
Width 2 Tracks, 1 In Use
Height Above Ground 15 Feet (Estimated)
Superstructure Design Deck Plate Girder
Substructure Design Stone Masonry
Date Built 1901 (South Track)
1906 (North Track)
Traffic Count 5 Trains/Day (Estimated)
Current Status In Use
Chicago & North Western Railway Bridge Number 170
Union Pacific Railroad Bridge Number 124.75
Significance Local Significance
Documentation Date 1/1/2018

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 west of Humbird, this deck plate girder bridge carries the former Chicago, St. Paul, Minneapolis & Omaha Railway mainline over County Road B and an unnamed creek. The first bridge at this location was likely a timber pile trestle, constructed when the line was first built. During the late 1890s and early 1900s, the Omaha Road invested significant capital into this line, replacing timber bridges with stone and steel structures. In 1901, the timber bridge would be replaced by a new deck plate girder span, set onto stone abutments. In 1906, the Omaha Road double tracked the line between Merrillan and Augusta, and a second track would be added to the north side of the bridge, giving the structure its present configuration. Currently, the bridge consists of a double track 50-foot deck plate girder span, set onto stone abutments. The deck girders use a standard design, with heavily constructed girders and an open deck. The abutments are constructed out of limestone quarried at Mankato, Minnesota. The Lassig Plant of American Bridge Company fabricated the south track, while an unknown contractor fabricated the north span. Unknown contractors constructed the abutments. Deck plate girder spans were commonly used by railroads, as they are durable and easy to construct. Since the initial construction, the bridge has seen little change. Today, only the south track remains in use. 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 dates Chicago, St. Paul, Minneapolis & Omaha Railway Valuation Engineering Field Notes at the National Archives
Builder (south track) Missing plaque
Railroad History Citation ICC Valuation Information, Compiled by Richard S. Steele

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