The Kishwaukee River Bridge in Rockford, IL, is a post-tensioned (PT) precast segmental concrete box-girder bridge that opened to traffic in 1980. The bridge has five spans with lengths of 170 ft (51.8 m), three at 250 ft (76.2 m), and one at 170 ft (51.8 m). The Kishwaukee River Bridge engineers chose the design of a single shear-key joint usually located close to the centroid of the cross section. The overall length of the deck is 1096 ft (334 m) and was built using the balanced cantilever method. Each cantilever consists of 17 segments 7.05 ft (2.15 mm) long and one pier segment 3.5 ft long (1.07 m). Cast-in-place closures are 3.23 ft (0.98 m) long.
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机译：伊利诺伊州罗克福德的Kishwaukee河大桥是后张预应力（PT）预制分段混凝土箱梁桥，于1980年投入使用。该桥有五个跨度，全长170英尺（51.8 m），三个跨度为250 ft （76.2 m），另一处在170英尺（51.8 m）。基什沃基河大桥的工程师选择了一个通常位于横截面质心附近的单剪力键节点设计。甲板的总长度为1096英尺（334 m），采用平衡悬臂法建造。每个悬臂由长7.05英尺（2.15毫米）的17个分段和一个长3.5英尺（1.07 m）的桥墩组成。现浇封盖的长度为3.23英尺（0.98 m）。
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