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Soo Line High Bridge facts for kids

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Soo Line High Bridge
Soo Line High Bridge 7.jpg
The Soo Line High Bridge from the southwest
Soo Line High Bridge is located in Wisconsin
Soo Line High Bridge
Location in Wisconsin
Soo Line High Bridge is located in the United States
Soo Line High Bridge
Location in the United States
Nearest city Somerset, Wisconsin
Built 1910–11
Built by American Bridge Company
Architect C.A.P. Turner
MPS Washington County MRA (AD)
NRHP reference No. 77000056
Added to NRHP August 22, 1977

The Soo Line High Bridge, also known as the Arcola High Bridge, is a steel deck arch bridge over the St. Croix River between Stillwater, Minnesota, and Somerset, Wisconsin. It was designed by structural engineer C.A.P. Turner and built by the American Bridge Company from 1910 to 1911. The bridge was listed on the National Register of Historic Places in 1977 for its national significance in the themes of engineering and transportation. It was nominated for its exceptional dimensions, beauty, innovative engineering techniques, and importance to transportation between Minnesota and Wisconsin.


The bridge was the second bridge on a Wisconsin Central Railway line that connected Chippewa Falls, Wisconsin, with Minneapolis, Minnesota. The line was originally built in 1884. The crossing of the St. Croix River was difficult for the railway, since the original bridge across the river was very low and trains had to contend with a steep grade on either side of the river. This made it necessary to use helper engines and to make trains shorter. In 1909 the Wisconsin Central Railway built a higher bridge over the river. The bridge is 184 feet (56 m) above the river and 2,682 feet (817 m) long, with five steel arches towering above the river.

The Wisconsin Central Railway was leased by the Minneapolis, St. Paul and Sault Ste. Marie Railway in 1909. In 1961 the Minneapolis, St. Paul and Sault Ste. Marie Railway, Wisconsin Central Railway and the Duluth, South Shore and Atlantic Railway merged to form the Soo Line Railroad. After the Soo Line Railroad acquired the Chicago, Milwaukee, St. Paul and Pacific Railroad, they shifted Chicago–Minneapolis traffic to that railroad's superior mainline. In 1987 the bridge and much of the Soo Line's track in Wisconsin became part of the new Wisconsin Central Ltd. The Wisconsin Central was acquired by Canadian National Railway on January 30, 2001.

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