page_title: Cherry Avenue Bridge
section_title: Structure
hierarchical_section_title: Cherry Avenue Bridge / Structure
caption_attribution_description: English: Eastern elevation of the Cherry Avenue railroad bridge
context_page_description: The Cherry Avenue Bridge is an asymmetric bob-tail swing bridge in Chicago, Illinois that carries the Chicago Terminal Railroad, pedestrians, and cyclists across the North Branch Canal of the Chicago River. It was constructed in 1901–02 by the Chicago, Milwaukee and St. Paul Railway, and it is a rare example of this type of bridge; it was designated a Chicago Landmark on December 12, 2007.
context_section_description: The bridge is one of two bob-tail swing bridges constructed by the Chicago, Milwaukee & St. Paul Railway on the North Branch of the Chicago River. The bridge runs north-south, the pivot pier is on the shore on the north side of the channel with a  134.5-foot (41.0 m) long, 40-foot (12 m) heigh Pratt truss arm that spans the channel, and a 70-foot (21 m) arm that carries the 280,000-pound (130,000 kg) counter-weight 20 feet (6.1 m) above the tracks. The bridge is no longer operable, but when constructed it was able to swing to the east, to an angle of 82.5˚ when parallel to the dock wall. The bridge was designed to carry a single railroad track, but also may originally have been intended for use by other vehicular traffic on Cherry Avenue. A sidewalk is cantilevered from the east side of the bridge.
caption: Eastern elevation of the bridge
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