Data Shows Locations Of Vulnerable Bridges - NewsChannel5.com | Nashville News, Weather & Sports

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Data Shows Locations Of Vulnerable Bridges

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A database created by NewsChannel 5 shows the location of hundreds of bridges across the state that are rated "structurally deficient" or "functionally obsolete."

The data shows bridges that have at least 10,000 vehicles a day that travel over them. (Click here to review the list.)

NewsChannel 5 compiled data from the U.S. Department of Transportation's National Bridge Inventory.

Here is a guide to interpreting the data:

The inventory contains inspection reports filed through 2006. It does not contain updated information on bridges recently repaired such as the Demonbreun Street Bridge in Davidson County.

Bridges are measured on a sufficiency rating scale from 0 to 100 with 100 representing a bridge entirely sufficient to 0 representing a deficient bridge.

On the database created by NewsChannel 5, "DEF" stands for structurally deficient, which refers to bridges needing significant maintenance attention, rehabilitation, or replacement.

Bridges labeled functionally obsolete will be indicated with "OBS."

These bridges that do not have the lane widths, shoulder widths, or vertical clearances adequate to serve traffic demand, or the bridge may not be able to handle occasional roadway flooding.

Five people were reported dead, eight missing and about 100 injured after a Minneapolis bridge that spans the Mississippi River plummeted into the river Wednesday night.

On Thursday, U.S. Secretary of Transportation Mary E. Peters called for the immediate inspection of steel deck truss bridges across the country.

According to Federal Highway Administration data, there are 756 of these types of structures in the country.

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