FOXY Fox River Bridge (Allouez)


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Name FOXY Fox River Bridge (Allouez)
Chicago & North Western Railway Bridge #U-104
Built By Chicago & North Western Railway
Currently Owned By Fox Valley & Lake Superior Rail System
Superstructure Contractor American Bridge Company of New York (Spans #2-#14)
Chicago Bridge & Iron Works of Chicago, Illinois (Spans #1 and #15-#18)
Unknown (Spans #19-#20)
Substructure Contractor Adolph Green Construction Company of Green Bay, Wisconsin (Piers #1-#19 and East Abutment)
Unknown (Pier #20 and West Abutment)
Erection Contractor Kelly-Atkinson Construction Company of Chicago, Illinois (Spans #2-#14)
Length 1,552 Feet Total, 192 Foot Main Span
Width 1 Track
Height Above Ground 40 Feet (Estimated)
Superstructure Design Polygonal Warren Pony Truss and Deck Plate Girder
Substructure Design Stone Masonry, Concrete and Steel Tower
Date Built 1906 (Spans #2-#14)
1915 (Spans #1 and #15-#18)
1921 (Spans #19-#20)
Traffic Count 1 Trains/Day (Estimated)
Current Status In Use
Chicago & North Western Railway Bridge Number U-104
Fox Valley & Lake Superior Rail System Bridge Number U-104
Significance Regional Significance
Documentation Date 9/27/2014

In 1872, the Milwaukee, Manitowoc and Green Bay Railroad (MM&GB) constructed 49 miles of new railroad, extending from Lake Shore Junction on the north side of Milwaukee, Wisconsin to Sheboygan, Wisconsin.  The MM&GB changed its name to the Milwaukee, Lake Shore and Western Railroad (MLS&W) after completion of the line.  The following year, the MLS&W resumed construction, completing an additional 32 miles to Two Rivers, Wisconsin, via Manitowoc, Wisconsin.  The MLS&W was reorganized as the Milwaukee, Lake Shore and Western Railway (MLS&W) in 1885, which again was reorganized with the same name in 1883.  The MLS&W had constructed a handful of lines in northeast Wisconsin during the late 19th Century, primarily to connect Lake Michigan and Lake Superior.  This line initially provided the MLS&W with a connection to the Chicago & North Western Railway (C&NW) at Milwaukee, which allowed the MLS&W to access Chicago. Due to the success of the MLS&W, the railroad was purchased by the Chicago & North Western Railway in 1893.  The C&NW had acquired and constructed a vast network of railroad lines throughout the Midwest during the late 19th Century, and the MLS&W system provided more opportunities for expansion.  

During the early 20th Century, the C&NW sought to improve operations by constructing new lines and improving existing lines.  The C&NW had become one of the premiere Midwest railroads, and sought to stay profitable and competitive.  The Manitowoc, Green Bay and North Western Railway (MGB&NW) was incorporated as a subsidiary of the C&NW in 1904 to construct a new connection between Manitowoc and Green Bay.  A 36 mile line was completed between the two cities in 1906, and the MGB&NW was sold to the C&NW in 1909.  Also in 1906, a bypass around the west side of Sheboygan was constructed to avoid the congested lakefront line.  These new lines provided the C&NW with a faster route between Chicago and Green Bay, serving Milwaukee and bypassing the industrial areas along Lake Winnebago.  As traffic on the route grew in the 20th Century, the Village of Whitefish Bay became concerned with the growing amount of trains through the Village.  In response, the C&NW constructed a short 4 mile cutoff between the north side of Whitefish Bay and Wiscona, a railroad junction on the north side of Milwaukee in 1929.  The portion of the line between Lake Shore Junction and Whitefish Bay would be removed immediately after completion of the cutoff.  Throughout the 20th Century, this line remained a core mainline for the C&NW, and was known as the Shoreline Subdivision.

By the late 20th Century, the C&NW sought to consolidate operations and abandon or sell unprofitable lines.  In 1988, the C&NW sold the Cleveland, Wisconsin to Green Bay segment and the Two Rivers Branch to the Fox River Valley Railroad, which became the Fox Valley and Western Ltd. (FV&W) in 1993.  The FV&W was a subsidiary of the successful Wisconsin Central Ltd. (WC), which had acquired a large amount of former Milwaukee Road and Soo Line trackage in Wisconsin.  The C&NW was purchased by Union Pacific Railroad (UP) in 1995. In 1996, the segment between Denmark, Wisconsin and Rockwood, Wisconsin was abandoned and acquired for future trail use.  In 2001, WC was purchased by Canadian National Railway (CN), and became the American subsidiary of the railroad. The Two Rivers Branch was abandoned in the 1990s or early 2000s.  Much of the original line through Sheboygan was abandoned in approximately 2005, and CN abandoned the line between Manitowoc and Cleveland in 2013.  In 2021, the Green Bay to Denmark segment was sold to the Fox Valley & Lake Superior Rail System (FOXY).  Today, UP operates the Shoreline Subdivision between Wiscona and Cleveland; and CN operates the Shoreline Subdivision between Manitowoc and Rockwood.  FOXY continues to operate the Denmark Branch between Green Bay and Denmark.  The Rockwood to Denmark segment is known as the Devils River State Trail, and much of the original line through Sheboygan has been reused as a trail.  Much of the UP segment between Sheboygan and Cleveland is out of service, and its future uncertain.


Located between Green Bay and Allouez, this large pony truss and deck plate girder bridge carries the former Chicago & North Western Railway mainline over the Fox River. When the C&NW decided to construct a new cutoff between Manitowoc and Green Bay, a large bridge across the Fox River would be required. Initial estimates for the structure placed the cost at approximately $250,000; with a steel swing span, several steel approaches spans and lengthy timber pile trestle approaches on either side. It was decided to also cross the Chicago, Milwaukee & St. Paul Railway (Milwaukee Road) mainline as part of the same structure, with the spans across the railroad separated from the river spans by a tall timber pile trestle. Contracts for the bridge were awarded in early 1905, and construction began in May of that year. Grieling Brothers of Green Bay, Wisconsin were awarded the contract to construct sixteen large stone piers and a stone abutment at the east end of the structure, and completed their work in early February 1906. On February 7 1906, prior to the installation of the steel superstructure, the center pier (pier #4) of the bridge collapsed into the river. It was also discovered that several other piers had sunk, due to the weight of the structures on a layer of quicksand underneath the riverbed. After the firing of three C&NW engineers and deliberations among other C&NW engineers, it was decided the only suitable fix was to demolish the fourteen piers in the river, drive deeper piles and rebuild the piers. In April 1906, Adolph Green Construction Company was awarded a contract with no limit to complete the work.

Throughout the summer of 1906, Adolph Green worked to demolish the original piers, reinforce the riverbed with rip-rap, drive new piles and rebuild the stone piers. Over the course of the repairs, over 1.5 million tons of stone were removed and rebuilt. The bridge finally opened to traffic on October 18, 1906 at a cost exceeding $1,000,000. Upon completion, this was the most expensive railroad bridge ever constructed in Wisconsin, and may have been among the most expensive constructed in the United States. The river bridge included a pony truss swing span, approached by nine deck plate girder spans on the west end and two deck plate girder spans on the east end. Initially, the bridge included trestle approaches at the west end and a lengthy trestle approach between the river spans and the spans over the Milwaukee Road tracks. The C&NW often used this method to allow approach embankments to settle without damaging permanent bridges. In 1915, it was decided to fill much of the approaches and separate the river bridge from the structure over the Milwaukee Road. Adolph Green was rewarded for his previous efforts with a contract to construct five new concrete piers on the west end of the bridge and a new concrete east abutment. Five new deck plate girder spans were installed, and a short trestle approach was retained at the west end of the bridge. The last alteration to the bridge came in 1921, when an additional concrete pier, new west abutment and two deck plate girder spans were installed on the west end, giving the bridge its present configuration.

Currently, the bridge consists of a 192-foot, 13-panel, riveted polygonal Warren pony truss rim-bearing swing span, approached by deck plate girder spans on either end. The east approach consists of a 75-foot (span #1) and two 65-foot (spans #2 and #3) deck plate girder spans; while the west approach consists of nine 80-foot (spans #5-#14), two each 75-foot and 45-foot (spans #15-#18) and two 65-foot (spans #19 and #20) deck plate girder spans. Piers #1 through #14 are composed of stone masonry, while piers #15 through #18 are constructed of concrete and serve as footings for steel towers, which carry the 45-foot spans. Piers #19 and #20 and both abutments are also constructed of concrete. The truss span uses a design that was replicated at a handful of C&NW swing bridges across the Fox River, and consists of heavy members and an unusual truss design. The deck plate girder spans all use heavy designs, with two girders and an open deck. With the exception of the center pier (pier #4), the stone piers use a standard rectangular design with angled fenders on the lower portions of both ends. The center pier uses an octogonal design, typical for C&NW swing spans from this era. Piers #15 through #18 use a multi-leveled rectangular design, with large pedestals on top. The steel towers supported by these piers are constructed of built-up beams, composed of both V-laced members and members connected by thin metal plates. Piers #19 and #20 use a standard rectangular concrete design, and both abutments use a U-shaped design. American Bridge Company fabricated the initial 1906 superstructure (spans #2 through #14), while Kelly-Atkinson Construction Company erected the spans. Chicago Bridge & Iron Works fabricated the 1915 spans (spans #1 and #15 through #18). An unknown contractor fabricated spans #19 and #20. Adolph Green Construction Company constructed the east abutment and piers #1 through #19, while pier #20 and the west abutment were constructed by an unknown contractor. Stone for the piers appears to consist of a white limestone, and was likely quarried at Duck Creek, Wisconsin; located on the north side of Green Bay.

Because the Fox River was a smaller navigable waterway, large through truss swing spans were not required. In response, the C&NW designed a unique pony truss swing span to bridge the river at this location, Kaukauna and Princeton. The swing span uses a rim-bearing design, where the superstructure is set onto a round plate girder drum, which rotates around a roller nest and is driven by a gearing system. The truss span is connected to the drum by a large plate girder square floor section. It appears that the bridge is electrically operated, and a machinery house is located near the center of the span. The end lifts of the swing span consist of a standard wedge design, which are driven by a gear system located underneath each end of the span. The outer bearing blocks consist of standard rollers, which allow the bridge to turn. This design consists of heavily constructed members and a traditionally composed floor. The endposts, top chord and bottom chord all use heavily built-up members, consisting of channels connected by extensive X-lacing. While the top chord and endpost both are covered by a solid plate on the exterior, the bottom chord appears to use X-lacing on both sides. With the exception of the center panel, the entire top chord is angled. Except for the innermost diagonal members, all diagonal and vertical members are constructed of solid rolled beams. The center of the span uses lighter built-up diagonal members of the diagonal members, which use two L-shaped bars connected by thin plates. The floorbeams and stringer use a plate girder design, and the bridge uses two stringers for the entire length.

At this location, the Fox River remains an important navigable waterway for inland industries. Because of this, the bridge is often parked in open position to allow ships to pass through. Polygonal truss spans first became popular in the late 19th Century, as they allowed longer spans while minimizing the amount of material required. Warren trusses also became popular in the early 20th Century, as the riveted connections and heavy members maximized strength, while retaining simplicity and economy. This particular design was a heavily designed version of an early Warren truss, and only a few examples were ever constructed. The heavily constructed members are unusual for a truss span of this age and length. While built-up beams and rolled beams were occasionally used at the turn of the 20th Century, the size and number of rolled members is unusual. Since the 1921 additions, the bridge has seen no significant alterations. Today, the bridge is occasionally used by trains to access a handful of industries east of the Fox River and in Denmark. Overall, the bridge appears to be in fair to good condition, with no significant deterioration noted. The author has ranked this span as being regionally significant, due to the unusual design and complex history.


Citations

Build dates and builders (spans #1-#18) Chicago & North Western Railway Valuation Notes at the Chicago & North Western Historical Society Archives
Build date (spans #19-#20) Chicago & North Western Valuation Map at the Chicago & North Western Historical Society Archives
Builder (piers #1-#14) The Chronicle (Two Rivers, Wisconsin); October 23, 1906
Builder (piers #15-#19 and east abutment) Green Bay Press-Gazette; May 26, 1915
Erection contractor (spans #2-14) Green Bay Press-Gazette; October 16, 1906
Railroad History Citation ICC Valuation Information, Compiled by Richard S. Steele

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