Des Plaines River Valley Bridge on I-355 (IL)

JSE provided design-build engineering services on this centerpiece project of the 14-mile I-355 extension. The superstructure design had spans up to 170’ using prestressed 90” bulb tee girders, 216’ spans using post-tensioned spliced segmental 102” bulb tee girders, and 270’ main spans using 120” haunched pier segments with 102” drop-in girders. The post-tensioned pier caps are supported on a single row of columns exceeding heights of 70’. The construction cost of the design provided by JSE beat the next closest design’s construction cost by $8 million.

Total Length: 2 structures at 6,600’each

Number of spans: 35 spans divided into 8 units

Main Span: 270’

Width: 63’-7”