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VDOT’s Instant Roundabout
Randy Dittberner, P.E., PTOE
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Braddock & Pleasant Valley
$5.8 million
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Purcellville $6.9 million
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Gilbert’s Corner $15.8 million
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South Riding, Va.
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South Riding, 2002
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South Riding, 2015
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Issues AM peak delays over 3 minutes In 4 years: 27 crashes
35 injuries
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Options Do Nothing All-Way Stop Traffic Signal Roundabout
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~95’
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$0.09 million
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29% 89%
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2017 National Roadway Safety Award
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Coming in 2018 $1.9 million
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Questions Randy Dittberner, P.E., PTOE Lee Engineering
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