Article and photographs by Divi Logan with Assistance from Copilot Smart AI. 31 March 2026. Orientation of the northwest bridge tender's house as viewed from a window in the southwest bridge house (the museum location). 2 June 2019. On the foundation of the northwest house is the geodetic disc stamped C135 1947. 1. What is… Continue reading USC&G Benchmark C135 1947 on the DuSable Bridge in Chicago. Field Notes for Civil Engineers and Bridge Crews.
Tag: civil engineering
The Dearborn Street Bridge: Chicago’s Bascule Bridges Integrate Architectural Planes into the City’s Dynamic Landscape.
Photograph by Divi Logan. 8 April 2025. Introduction: What is a Bascule Bridge? The word "bascule" comes from the French for "seesaw" and captures the idea of balancing the weight on either side of the pivot point. Bascule bridges use counterweights to help raise and lower the spans. Most of the bridges in use during… Continue reading The Dearborn Street Bridge: Chicago’s Bascule Bridges Integrate Architectural Planes into the City’s Dynamic Landscape.
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