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William Ogden, town’s first mayor, led a bunch of real estate buyers who in the 1850’s developed the world and created Goose Island. By digging a canal throughout a westerly bend in the river they expected to raise property values, raise the grade on this swampy area, and supply extra delivery and water access. The East Division Street Bridges could mix new and old – through construction of a new wider bridge deck and the rehabilitation and incorporation of the present three truss superstructures. In 2002, the Lake Shore Drive Bridge at Jackson Harbor close to 56th Street underwent just such a reconstruction.Plans for the Cortland Street Bridge, which was additionally put out for bid, incorporated most of those refinements. Fast-ahead to 1995 when all drawbridges above North Halsted Avenue on the North Branch were no longer required to open on demand. Proceedings of the 6th European Conference on Computational Mechanics & 7th European Conference on Computational Fluid Dynamics , Glasgow, Scotland. is a bridge composed of log beams, the logs being in pure condition or hewn, that are thrown across two abutments, and over which visitors could pass.This was done so a pedestrian underpass might be added as a part of a $162 million South Lake Shore Drive rehabilitation project. A Board of Consulting Engineers (Lyman E. Cooley, Bryon B. Carter, and Ralph Modjeski) permitted town designs and instructed specific refinements to the substructure, flooring system, and operating equipment.In the late 1960’s, the original operator homes were changed with Modernist constructions sporting flat roofs, overhanging eaves, and vertical wood siding. The East and West Division Street Bridges represent Chicago’s early north aspect development.Possible solutions are the set up of sensors on a specialist inspection car and using its measurements as it drives over the bridge to deduce details about the bridge condition. This Webpage An choice for structural-integrity monitoring is "non-contact monitoring", which makes use of the Doppler effect . The benefit of this technique is that the setup time for the equipment is faster and, not like an accelerometer, this makes measurements possible on multiple buildings in as quick a time as potential. Additionally, this methodology can measure specific factors on a bridge that may be difficult to access.While larger modern bridges are routinely monitored electronically, smaller bridges are generally inspected visually by educated inspectors. There is appreciable analysis curiosity in the challenge of smaller bridges as they are often distant and do not have electrical power on website.