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Diverging Diamond

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Uploaded on Dec 10, 2010

The Tennessee Department of Transportation partnered with the City of Alcoa and Gresham Smith and Partners to build only the fifth diverging diamond interchange in the country.


The designed improvement re-aligns Middlesettelements Road to tie into Bessemer Street. Under the existing U.S. 129/State Route 115 bypass bridge, the diverging diamond interchange design requires traffic to crisscross over the left side of the roadway.

Concrete barriers, stop bars, detailed signs, pavement markings and traffic signals will be used to guide motorists through the diverging diamond design that will be studied by the Federal Highway Administration

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