Triangle will join bad air list (04/13/2004) 1130116829224505

April 21, 2004 2:15 AM

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  • Here's how a diverging diamond interchange works

    The N.C. Department of Transportation made this video to explain the "diverging diamond" interchange or DDI. The department is planning to build two of them in the Triangle, at the Beltline and Western Boulevard in Raleigh and at Interstate 40 and N.C. 42 in Johnston County.