In 1899, engineers from the City of Chicago's Division of Bridges and Viaducts performed a survey of moveable bridge design in the U.S. and Europe. Their study led to the conclusion that the unusual trunnion bascule design would best meet their needs.
Ericson
YearAdded:
Image Credit: Courtesy Flickr/Matthew Black (CC BY-SA 2.0)Image Caption: Cortland Street DrawbridgeEra_date_from: 1902
1981
Innovations
In 1899, engineers from the City of Chicago's Division of Bridges and Viaducts performed a survey of moveable bridge design in the U.S. and Europe. Their study led to the conclusion that the unusual trunnion bascule design would best meet their needs.
The Cortland Street Drawbridge…
