CN County KK Bridge


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Name CN County KK Bridge
Built By Green Bay & Western Railroad
Currently Owned By Canadian National Railway
Superstructure Contractor Wisconsin Bridge & Iron Company of North Milwaukee, Wisconsin (Main Span)
Unknown (Approach Spans)
Substructure Contractor Unknown
Length 105 Feet Total, 65 Foot Main Span
Width 1 Track
Height Above Ground 15 Feet (Estimated)
Superstructure Design Deck Plate Girder and Steel Stringer
Substructure Design Concrete
Date Built 1931, Approaches and Substructures Constructed 1940
Traffic Count 1 Train/Day (Estimated)
Current Status In Use
Significance Local Significance
Documentation Date 4/6/2024

In 1866, a charter was granted to the Green Bay & Lake Pepin Railway (GB&LP) to construct a line between Green Bay, Wisconsin and the Mississippi River.  Construction on the line began in 1869, and initially progressed slowly.  In January 1872, the first 40 miles were completed between Green Bay and New London, Wisconsin.  An additional 172 miles to East Winona, Wisconsin was completed by the end of 1873.  The GB&LP changed its name to the Green Bay and Minnesota Railroad (GB&M) after completion of the line.  Initially, the intent was to connect with the Winona & St. Peter Railroad (W&StP), which had constructed a line across southern Minnesota.  After the W&StP fell under control of the Chicago & North Western Railway (C&NW), these goals were dashed.  The GB&P was acquired by the Green Bay, Winona & St. Paul Railroad (GBW&StP) in 1881.  In 1891, the Winona Bridge Railway constructed a new bridge across the Mississippi River at Winona, connecting with the end of the GBW&StP tracks at East Winona.  The bridge company was jointly organized by the GBW&StP and the Chicago, Burlington & Quincy Railroad.  In 1896, the GBW&StP  was acquired by the Green Bay & Western Railway (GB&W).

The GB&W was an independent railroad, operating a connection between Lake Michigan and the Mississippi River.  Car ferries were constructed to connect to the Ann Arbor Railroad (AA) at Frankfort, Michigan and to the Pere Marquette Railway (PM) at Ludington, Michigan.  The railroad mainly served local traffic through the early 20th Century, and connected with most major railroads operating in Wisconsin.  By the mid-20th Century, the railroad was in decline, and new management took it over and revitalized the railroad into a "bridge line".  As part of the revitalization, the car ferries gained importance, as it provided the eastern railroads with a suitable bypass of the congested railroad network in Chicago.  As traffic declined in the late 20th Century, the railroad began to fall into disrepair.  The bridge across the Mississippi River was abandoned in 1984, and was burned and removed in 1989.  The GB&W was purchased by Wisconsin Central, Ltd. (WC) in 1993. 

A segment between Scandinavia, Wisconsin and Plover, Wisconsin was abandoned in 1994.  An additional segmenent between Manawa, Wisconsin and Scandinavia was abandoned in 2000, and a segment between Green Bay and New London was abandoned in 2001.  These segments were sold to the Wisconsin Department of Natural Resources for trail use.  WC was purchased by the Canadian National Railway (CN) in 2001, and became the American subsidiary of CN.  In 2021, CN sold the remaining segments in Green Bay and from New London to Manawa to the Fox Valley & Lake Superior Rail System (FOXY).  Today, FOXY continues to operate those two segments.  CN continues to operate the Plover to East Winona segment, although the line between Arcadia, Wisconsin and East Winona is out of service.  The segment between Green Bay and New London is currently part of the Newton Blackmour State Trail, while the segment between Anawa and Plover is part of the Tomorrow River State Trail.


Located in Amherst Junction, this deck plate girder bridge carries the former Green Bay & Western Railroad mainline over County Road KK (US Highway 10). In the late 1920s and early 1930s, the Wisconsin State Highway Commission began working with various railroad companies to construct grade separations at busy grade crossings. In 1931, it was decided to construct an underpass for US Highway 10 in Amherst Junction. Construction on the underpass commenced in the summer of 1931, and was constructed by railroad company forces. Initially, the bridge consisted of a deck plate girder span, set onto timber piers and approached by timber pile trestle spans. In 1940, the bridge was partially rebuilt, when steel stringer spans were constructed to replace the timber approaches, and concrete substructures installed to replace the timber pile substructures. Currently, the bridge consists of a 65-foot deck plate girder span, approached by a 20-foot steel stringer span on either end. The entire bridge is set onto concrete substructures, and runs at a significant skew. Due to the skew, each face of the approaches is actually a different length, with one face being 18 feet and the other being 22 feet. The main span uses a standard design for the era, with shallow girders and an open deck. The approach spans each use six beams, arranged into two sets of three. Wisconsin Bridge & Iron Company fabricated the main span, while an unknown contractor fabricated the approach spans. It is unknown if the concrete substructures were constructed by an unknown contractor or by railroad company forces. Deck plate girder spans were commonly used by railroads, as they were durable and easy to construct. Since the initial construction, the bridge has seen few alterations. Today, it continues to serve railroad traffic on a spur to industries north of the bridge. 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

Builder and build date (main span) Wisconsin Bridge & Iron Company plaque
Build date (approaches) Date stamp
Railroad History Citation ICC Valuation Information, Compiled by Richard S. Steele

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