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The blog serves as a collection space for a variety of musings and observations of the world around us...through the use of sketches, drawings, photos, images and videos...intended to be shared and to stimulate thoughts, ideas and inspirations...douglas wittnebel

Thursday, June 15, 2017

State Street bridge, Chicago visit






This bridge is among the newer of Chicago's deck truss bascule bridges with a 1949 construction date...The bridge is an example of the unique Chicago design which raised the position of the deck truss up just far enough so that the top chord is above the deck like a pony truss, where it can act as a guardrail and also increase both the clearance under the bridge and the streamlined aesthetics of the bridge. This design is known as the railing height truss...

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Grand Canyon Sketches 2009

Grand Canyon Sketches 2009
a selection of sketches from the Grand Canyon